biology extended essay topic ideas

Extended Essay Writers

Biology EE Topics | 40 Ideas

Luke MacQuoid

There are many potential topics for a biology Extended Essay (EE) in the International Baccalaureate (IB) program.

Topic Ideas

Some possibilities include the following:

• The effects of pollution on a particular species or ecosystem.
• The genetic basis of a specific disease or trait.
• The comparative physiology of a specific mammal and bird.
• The effects of climate change on a particular species or ecosystem.
• The impact of human activity on the evolution of a species.
• The physiology of a specific plant species.
• The efficacy of a specific medicinal plant.
• The comparison of the anatomy and physiology of a specific animal species in captivity and in the wild.
• The impact of a specific invasive species on an ecosystem.
• The effect of different fertilizers on the growth and development of a specific plant species.
• The study of the symbiotic relationship between specific species.
• The effect of different light conditions on the growth and development of a specific plant species.
• The impact of different temperature conditions on the physiology of a specific microorganism.
• The study of the genetic diversity within a specific species.
• The study of the effects of different pH levels on the growth and development of a specific plant species.
• The impact of human activity on the population dynamics of a specific species.
• The study of the effects of different soil types on the growth and development of a specific plant species.
• The study of the impacts of different pesticides on the physiology of a specific species.
• The study of the effects of different water conditions on the growth and development of a specific plant species.
• The study of the impact of ocean acidification on the physiology of a specific marine species.
• Studying the Effects of Acid Rain on Local Flora.
• The Role of Gut Microbiota in Obesity.
• Influence of Insecticides on Honey Bee Population Decline.
• The Effects of Microplastics on Aquatic Food Chains.
• The Role of Genetics in Determining Human Lifespan.
• Influence of Habitat Loss on the Genetic Diversity of a Specific Species.
• The Effects of Light Pollution on Nocturnal Animals.
• A Comparative Study of Photosynthesis Rates in Different Plant Species.
• The Impact of Noise Pollution on Avian Communication.
• Analysis of Biological Controls for Invasive Species.
• The Effects of Diet on the Gut Microbiota.
• Understanding the Effect of Climate Change on Disease Vectors.
• Exploring the Role of Genetics in Athletic Performance.
• Effects of Pharmaceuticals on Aquatic Ecosystems.
• The Impact of Urbanization on Local Bird Species.
• Understanding the Relationship Between Sleep and Immune Function.
• Studying the Effects of Air Pollution on Lichen Species.
• The Role of Epigenetics in Aging.
• The Effect of Vegan and Vegetarian Diets on the Human Body.
• Investigating the Biological Mechanisms of Meditation and Mindfulness.

It’s important to note that these are just examples of topics for your IB EE in Biology . You should choose a topic that interests you and that you can find enough information on.

Need help with your Biology extended essay?

From research and analysis to structuring and editing, our skilled mentors will be by your side, helping you craft an exceptional extended essay that not only meets the stringent IB criteria but also reflects your passion for Biology studies.

Additionally, it’s essential to consult with your supervisor to make sure the topic meets the requirements of the Extended Essay and that you have access to the necessary resources to complete the research.

Students can use these themes in their essays by researching and analyzing the specific topic, providing evidence and examples to support their claims, and discussing the implications and potential solutions to the issue at hand.

For example, in an essay on the effects of pollution on a particular species or ecosystem, a student could research the specific pollutants that are affecting the species or ecosystem, analyze the effects those pollutants are having, and discuss potential solutions to mitigate the pollution and its effects.

These are experiments students can use for Biology EE topics:

• Looking at how pollution impacts a certain type of animal or plant: This would involve checking out pollution levels in a specific place, then watching to see how it affects your chosen species.
• Understanding how certain genes affect a disease or characteristic: This would mean doing genetic tests to identify the genes involved, and potentially using genetic engineering techniques to change those genes and see what happens.
• Comparing how a mammal and a bird work: You’d do experiments to see how your chosen mammal and bird are similar or different. You could look at things like brain structure, behaviour, and thinking abilities.
• Exploring how climate change impacts a certain animal, plant, or ecosystem: This could involve experiments to see how changes in temperature, rain patterns, or CO2 levels affect your chosen species or ecosystem.
• Studying how people’s actions affect how a species evolves: This might mean looking at how things like habitat destruction, hunting, or pollution impact a species’ genetic diversity and population.
• Looking at how a certain plant works: You’d do experiments to see how the plant responds to things like light, temperature, or water.
• Studying how well a medicinal plant works: You’d do experiments to see how good the plant is at killing or slowing the growth of microbes, or reducing pain or inflammation.
• Comparing a certain animal in captivity and in the wild: You’d look at how being in captivity affects the animal’s body and how it works, and how it behaves.
• Seeing how an invasive species affects an ecosystem: You’d study how your chosen invasive species impacts the growth, reproduction, and health of native species.
• Studying how different fertilizers affect a plant: This could involve testing different types of fertilizers to see how they affect the plant’s growth rate, leaf size, and health.
• Looking at how certain species interact: You’d do experiments to understand the relationship between the species. This could involve seeing what happens when you remove one species, or how different environments affect the relationship.
• Studying how light affects a plant: This might mean doing experiments to see how different light conditions affect the plant’s growth, leaf size, and health.
• Looking at how temperature affects a microorganism: You’d do experiments to see how different temperatures impact the microorganism’s growth rate, metabolism, and health.
• Studying genetic diversity in a species: This could involve using genetic markers to identify genetic variations in the species, and then seeing how these variations affect the organism.
• Looking at how pH levels affect a plant: You’d do experiments to see how different pH levels impact the plant’s growth, leaf size, and health.
• Studying how people’s actions affect a species’ population: This might mean looking at how things like habitat destruction, hunting, or pollution impact the species’ population size, growth rate, and health.
• Looking at how soil types affect a plant: This could involve doing experiments to see how different types of soil affect the plant’s growth, leaf size, and health.
• Studying how pesticides affect a species: This might mean doing experiments to see how different pesticides impact the species’ growth, reproduction, and health.
• Looking at how water conditions affect a plant: You’d do experiments to see how different water conditions (like availability, salt levels, or temperature) affect the plant’s growth, leaf size, and health.
• Studying how ocean acidification affects a marine species: This could involve doing experiments to see how increasing acidity levels impact the species’ growth, reproduction, and health.

Additionally, in an essay on the comparative psychiatry of a specific mammal and bird, a student could research and compare the brain structures, behaviors, and cognitive abilities of the two species and discuss any similarities and differences found.

A student can ask for help from a writing service if they need assistance with their essay. This can bring several benefits to the student, such as:

• Professional guidance . Writing services often have experienced writers and editors who can provide guidance on the essay topic and structure, as well as help with research and editing.
• Improved quality . A writing service can help improve the overall quality of the essay, including grammar, punctuation, and formatting.
• Better grades . With the help of a writing service, a student’s essay is likely to be of higher quality, which can lead to better grades.
• Time-saving . A writing service can help save time as the student can focus on other responsibilities while the writing service works on the essay.
• Customization . Writing services can also provide a customized service that can be tailored to the student’s specific needs and requirements.
• Originality . Professional writers will provide original work that is free from plagiarism, which is important in academic writing.

It is important to note, however, that a student should always ensure that the writing service they use is reputable and that they review and understand the work they receive before submitting it as their own.

Luke MacQuoid has extensive experience teaching English as a foreign language in Japan, having worked with students of all ages for over 12 years. Currently, he is teaching at the tertiary level. Luke holds a BA from the University of Sussex and an MA in TESOL from Lancaster University, both located in England. As well to his work as an IB Examiner and Master Tutor, Luke also enjoys sharing his experiences and insights with others through writing articles for various websites, including extendedessaywriters.com blog

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Biology Extended Essay Topics and RQs for IBDP

Table of contents

• Writing Metier

It’s time for our exploration of Biology extended essay topics, a resource designed to spark your curiosity and guide your research interests in the vast and vibrant field of biology. 

Whether you’re fascinated by the intricate workings of ecosystems or intrigued by the complexities of cellular processes, this article offers a diverse range of topics collected by expert academic writers to suit your interests. 

NB! If you need assistance with your Biology assignments, you can use our biology essay writing service , which will surely assist you. Now, let’s get back to the main question of the article – BIO EE topic ideas.

Bio EE topic categories

List of biology extended essay topic categories I’ll cover in this article.

• Impact of Urban Development on Local Ecosystems – Investigating the effects of urban expansion on biodiversity in a specific area.
• Marine Biology and Ocean Acidification – Studying the impact of changing pH levels on marine life.
• Invasive Species and Their Impact on Biodiversity – Analyzing how a particular invasive species has affected native wildlife.
• Conservation Efforts for Endangered Species – Evaluating the effectiveness of current conservation strategies for a specific endangered species.
• Climate Change and Its Effects on Ecosystems – Researching how a particular ecosystem has been impacted by climate change.
• Nutrition and Diet’s Impact on Human Health – Exploring the effects of a specific diet on human health.
• Exercise Physiology – Investigating how different types of exercise affect a particular aspect of human health.
• Neurobiology of Sleep – Studying the effects of sleep patterns on cognitive functions.
• Genetic Factors in Diseases – Exploring the role of genetics in the susceptibility to a specific disease.
• Impact of Environmental Factors on Allergies – Analyzing how environmental changes have influenced the prevalence of allergies.
• Gene Expression in Cancer Cells – Investigating how gene expression differs in cancerous versus normal cells.
• Protein Synthesis and Its Regulation – Studying the regulation of protein synthesis in a specific organism or cell type.
• Stem Cell Research and Regenerative Medicine – Exploring the potential of stem cells in treating a specific condition.
• Viral Replication and Host Interaction – Examining how a particular virus replicates and interacts with its host.
• DNA Repair Mechanisms – Investigating the efficacy of different DNA repair mechanisms under various conditions.
• Photosynthesis Variations Among Plant Species – Comparing photosynthetic efficiency in different plant species.
• Impact of Climate Change on Plant Growth – Studying how changing climates affect the growth of a specific plant species.
• Medicinal Properties of Plants – Investigating the medicinal properties of a specific plant.
• Plant Defense Mechanisms Against Pathogens – Exploring how a particular plant species defends itself against pathogens.
• Genetic Modification and Crop Improvement – Analyzing the impacts of genetic modification on a specific crop’s traits.
• Social Behavior in Insects – Studying the social structures and behaviors of a specific insect species.
• Bird Migration Patterns – Investigating the factors influencing migration patterns of a specific bird species.
• Physiological Adaptations in Marine Mammals – Exploring adaptations that enable marine mammals to survive in their environments.
• Impact of Environmental Stressors on Animal Behavior – Analyzing how specific stressors affect the behavior of a particular animal species.
• Endocrine Regulation in Animals – Studying how the endocrine system regulates processes in a specific animal.
• Antibiotic Resistance in Bacteria – Investigating the mechanisms of antibiotic resistance in a specific bacterial strain.
• Use of Microorganisms in Bioremediation – Exploring the use of microorganisms in cleaning up environmental pollutants.
• Genetic Engineering and Its Applications – Analyzing the applications and implications of genetic engineering in a specific field.
• Role of Microbiome in Human Health – Studying how the human microbiome influences health and disease.
• Yeast Fermentation and Its Industrial Applications – Investigating the fermentation process in yeast and its uses in industry.
• Evolutionary Adaptations to Environmental Changes – Exploring how a particular species has adapted to environmental changes over time.
• Genetic Diversity and Population Health – Studying the impact of genetic diversity on the health of a specific population.
• Molecular Basis of Inheritance – Investigating the molecular mechanisms of inheritance in a specific organism.
• Speciation and Genetic Drift – Analyzing the role of genetic drift in the speciation process.
• Human Evolutionary Biology – Studying aspects of human evolution, such as the development of specific traits.

Every category and its subcategories provide a comprehensive overview, from the microscopic wonders of microbiology to the grand scale of evolutionary biology. 

With the help of our IB writers team, I have managed to collect all these ideas for you, so I hope you will be enjoying this. I aim to inspire your investigative spirit and help you select a topic that  satisfies the IB criteria  and aligns with your passion for biology. 

IB Bio extended essay topics

So, let’s begin with a list of IB Biology EE topics list.

Ecology and Environmental Science

I’m stoked to talk about Ecology and Environmental Science . It’s all about how living things interact with each other and their surroundings. Think of it like a complex dance of life, where every move affects the whole scene. 

From the hustle and bustle of city ecosystems to the quiet, yet dynamic, world of marine biology, we’ll explore how these interactions shape our planet. We’ll also explore the hot topics of invasive species and their impacts, the heroic efforts in conservation, and the big elephant in the room – climate change. 

So, let’s get ready to explore the intricate tapestry of life that makes our world fascinating!

Impact of Urban Development on Local Ecosystems

• Research Question: How does the presence of urban green spaces affect bird species diversity in [City Name]?
• Research Question: What impact do urban heat islands have on the behavior and distribution of [Specific Animal Species] in [City Name]?

Marine Biology and Ocean Acidification

• Research Question: How does ocean acidification affect coral bleaching events in the [Specific Coral Reef Location]?
• Research Question: What is the impact of increasing ocean acidification on the shell growth and survival of [Specific Shellfish Species]?

Invasive Species and Their Impact on Biodiversity

• Research Question: What has been the impact of the invasive Zebra Mussel on native species in the Great Lakes?
• Research Question: How do invasive plant species [Specify Species] affect the growth and survival of native plants in [Specific Region]?

Conservation Efforts for Endangered Species

• Research Question: How effective have conservation strategies been in increasing the population of the Giant Panda in China?
• Research Question: What are the impacts of anti-poaching measures on the survival of Rhinoceros populations in Africa?

Climate Change and Its Effects on Ecosystems

• Research Question: How is the melting of Arctic sea ice affecting the habitat and migration patterns of polar bears?
• Research Question: What are the effects of rising global temperatures on plant and animal life in the Alpine ecosystems?

Transitioning from the external world of Ecology and Environmental Science, we now turn to the internal intricacies of Human Physiology and Health. 

This shift brings us from exploring external ecosystems to understanding our body’s inner workings, a world where lifestyle choices meet biological responses.

Human Physiology and Health

Let’s chat about Human Physiology and Health, the amazing science of how our bodies work and how we keep them ticking. We’re diving headfirst into the world of nutrition and diet – what you eat isn’t just about taste, it’s about your health too! 

Then, we’ll check out how exercise, that thing we all know we should do more of, affects our bodies in awesome ways. Ever wondered about the science of sleep and how it messes with your brain when you don’t catch enough Z’s? We’ll cover that, along with the mysteries of genetics in diseases, and how our environment plays a sneaky role in triggering allergies. 

It’s going to be an eye-opening ride through the wonders of our bodies!

Nutrition and Diet’s Impact on Human Health

• Research Question: How does adherence to the Mediterranean diet affect cardiovascular health indicators in adults?
• Research Question: What is the impact of a long-term vegan diet on nutrient absorption and health in teenagers?

Exercise Physiology

• Research Question: How does HIIT affect cardiovascular fitness in young adults?
• Research Question: What are the effects of regular yoga practice on stress and anxiety levels in college students?

Neurobiology of Sleep

• Research Question: How does sleep deprivation impact cognitive performance and memory in high school students?
• Research Question: What is the relationship between sleep patterns and academic performance in IB students?

Genetic Factors in Diseases

• Research Question: How do specific genetic factors contribute to the risk of developing Alzheimer’s disease?
• Research Question: What is the contribution of genetics to the onset of Type 2 Diabetes in populations with high prevalence rates?

Impact of Environmental Factors on Allergies

• Research Question: What is the correlation between air pollution levels and the prevalence of respiratory allergies in urban children?
• Research Question: How has climate change influenced the prevalence and severity of allergic diseases in [Specific Region]?

Moving from Human Physiology and Health, we zoom into the realm of Cellular and Molecular Biology. 

Here, we swap the broader human health perspective for a closer look at life’s building blocks, delving into the microscopic universe that operates within every living being.

Cellular and Molecular Biology

Ready to geek out on Cellular and Molecular Biology? This is where we get down to the nitty-gritty of life – the cells and molecules that make up every living thing. 

We’re talking about the big bad world of cancer cells and what makes them tick, the fascinating process of how our cells make proteins, and the cutting-edge stuff like stem cell research and how viruses play a game of cat and mouse with our bodies. 

Meanwhile, make sure also to check our article with biology research paper topics for all students.

Plus, we’ll unravel the mysteries of how our cells fix their own DNA. It’s like being a detective, but for biology. Trust me, it’s cooler than it sounds!

Gene Expression in Cancer Cells

• Research Question: How does gene expression in breast cancer cells differ from that in normal breast tissue?
• Research Question: What role do specific oncogenes play in the development of colorectal cancer?

Protein Synthesis and Its Regulation

• Research Question: How is protein synthesis regulated in response to physical exercise in human muscle cells?
• Research Question: How do bacterial cells regulate protein synthesis under environmental stress conditions?

Stem Cell Research and Regenerative Medicine

• Research Question: What is the potential of stem cell therapy in the treatment of Parkinson’s Disease?
• Research Question: How can stem cells be used to repair damaged heart tissue?

Viral Replication and Host Interaction

• Research Question: How does HIV replicate within human cells, and what is its impact on the immune system?
• Research Question: How does the Influenza virus adapt to host immune responses over time?

DNA Repair Mechanisms

• Research Question: How do DNA repair mechanisms change as human cells age?
• Research Question: How effective are DNA repair mechanisms in skin cells exposed to different levels of UV radiation?

After diving into the microcosm of cells and molecules, we transition to Plant Biology. 

This shift steers us from the foundations of life at the cellular level to the diverse world of plants, exploring how these organisms harness and embody basic biological principles.

Plant Biology

Let’s dive into the world of Plant Biology! Plants are not just pretty to look at; they’re the backbone of all life on Earth. 

We’ll be talking about how they turn sunlight into food – a process that’s as important as it is fascinating. Ever wonder how plants are coping with our changing climate or what superpowers medicinal plants have? We’ve got that covered. 

We’ll also explore the secret life of plants, how they defend themselves against enemies, and the science behind making them stronger and better through genetic modification. 

It’s time to get our hands dirty and uncover the secrets of the plant world!

Photosynthesis Variations Among Plant Species

• Research Question: How does photosynthetic efficiency compare between C3 and C4 plants under varying light conditions?
• Research Question: What is the effect of varying light intensities on the rate of photosynthesis in [Specific Aquatic Plant Species]?

Impact of Climate Change on Plant Growth

• Research Question: How are Arctic tundra plants adapting their growth patterns in response to global warming?
• Research Question: What is the impact of elevated atmospheric CO2 levels on the growth of [Specific Plant Species]?

Medicinal Properties of Plants

• Research Question: What are the anti-inflammatory properties of [Specific Medicinal Plant] and how can they be harnessed?
• Research Question: What is the antioxidant capacity of different herbal teas, and how does it affect human health?

Plant Defense Mechanisms Against Pathogens

• Research Question: How do [Specific Plant Species] defend themselves against fungal infections?
• Research Question: What role do secondary metabolites play in the defense mechanisms of [Specific Plant Species] against herbivores?

Genetic Modification and Crop Improvement

• Research Question: How effective are genetically modified crops in resisting drought conditions compared to traditional varieties?
• Research Question: What is the impact of genetic modification on the nutrient content of [Specific Crop]?

From the stationary life of plants, we now step into the dynamic world of Animal Behavior and Physiology. This change of scene introduces us to the complex behaviors and physiological adaptations of animals, offering a contrasting perspective to plant biology.

Animal Behavior and Physiology

Let’s jump into the wild and wonderful world of Animal Behavior and Physiology. This is where we get to spy on the animal kingdom and learn about their secret lives. 

From the social gossip of insects to the globe-trotting adventures of migratory birds, animals have some amazing stories to tell. 

We’ll also look at how marine animals have adapted to their deep and mysterious homes, how animals respond when their environment goes bonkers, and the hormonal soap operas that dictate their lives. 

It’s like being a fly on the wall in the most interesting nature documentary ever!

Social Behavior in Insects

• Research Question: How does the social structure of honeybee colonies affect their survival and productivity?
• Research Question: What are the primary communication mechanisms used in ant colonies, and how do they impact colony efficiency?

Bird Migration Patterns

• Research Question: How has climate change affected the migration routes of [Specific Bird Species]?
• Research Question: How do magnetic fields influence the migration patterns of [Specific Bird Species]?

Physiological Adaptations in Marine Mammals

• Research Question: What physiological adaptations allow sperm whales to dive to extreme depths?
• Research Question: How do polar bears regulate their body temperature in the Arctic environment?

Impact of Environmental Stressors on Animal Behavior

• Research Question: How does underwater noise pollution affect the behavior and communication of dolphins?
• Research Question: What are the effects of urban light pollution on the nocturnal activities of [Specific Nocturnal Animal Species]?

Endocrine Regulation in Animals

• Research Question: How do hormones regulate the reproductive behaviors in [Specific Bird Species]?
• Research Question: How do stress-induced cortisol levels affect the behavior of [Specific Wild Animal Species] in their natural habitat?

Leaving the observable world of animals, we enter the less visible but equally important sphere of Microbiology and Biotechnology. This transition takes us from larger life forms to the microscopic, where tiny organisms significantly impact our health, environment, and technology.

Microbiology and Biotechnology

Alright, microbe hunters and tech wizards, it’s time to zoom in on Microbiology and Biotechnology. This is the world of the tiny, where bacteria and viruses hang out, and where science meets innovation . 

We’re going to explore the battleground of antibiotic resistance, how we can use tiny organisms to clean up our messes, and the mind-blowing possibilities of genetic engineering. 

Ever thought about how your gut buddies – the microbiome – affect your health? We’ll get into that too, along with the yeast party that’s behind some of your favorite bread and beverages.

Antibiotic Resistance in Bacteria

• Research Question: What factors have contributed to the rise of Methicillin-resistant Staphylococcus aureus (MRSA) in hospitals?
• Research Question: What are the primary mechanisms of antibiotic resistance in Escherichia coli strains found in [Specific Environment]?

Use of Microorganisms in Bioremediation

• Research Question: How effective are specific bacterial species in the bioremediation of oil spills?
• Research Question: What is the effectiveness of using fungi in the phytoremediation of soils contaminated with heavy metals?

Genetic Engineering and Its Applications

• Research Question: What is the potential of CRISPR-Cas9 technology in preventing genetic diseases?
• Research Question: How has genetic engineering been used to enhance the nutritional quality of [Specific Crop]?

Role of Microbiome in Human Health

• Research Question: What is the relationship between the gut microbiome and obesity in adults?
• Research Question: How does the diversity of the human microbiome affect immune system functioning?

Yeast Fermentation and Its Industrial Applications

• Research Question: How efficient is yeast fermentation in the production of biofuels compared to traditional methods?
• Research Question: How do different yeast strains affect the flavor profiles in beer brewing?

Finally, we shift from the practical applications in Microbiology and Biotechnology to the historical narrative of Evolution and Genetics. This move links present-day biological understanding to the historical journey of life, unraveling how genetic heritage and evolutionary processes shape all living things.

Evolution and Genetics

Ready to unravel the tales of Evolution and Genetics? This is where we figure out how life on Earth got to be as diverse and fantastic as it is. We’ll be exploring the incredible adaptations organisms have made to survive and thrive, how genetic diversity is crucial for the health of species, and the molecular secrets behind inheritance. 

Ever pondered how new species come into being or what genetics reveal about our own ancient history ? Well, you’re in for a treat. We’re about to walk through time and genes to discover the roots and branches of the tree of life. Buckle up!

Evolutionary Adaptations to Environmental Changes

• Research Question: What evolutionary adaptations have enabled cacti to thrive in harsh desert environments?
• Research Question: How have Galápagos finches undergone adaptive radiation in response to their environment?

Genetic Diversity and Population Health

• Research Question: How does genetic diversity affect the health and survival of animal populations on isolated islands?
• Research Question: How can conservation genetics be used to enhance the survival prospects of [Specific Endangered Species]?

Molecular Basis of Inheritance

• Research Question: What is the molecular basis of inheritance for Sickle Cell Anemia?
• Research Question: How can mitochondrial DNA be used to trace maternal lineage in human populations?

Speciation and Genetic Drift

• Research Question: What role has genetic drift played in the speciation of cichlids in Lake Victoria?
• Research Question: How does genetic drift affect the genetic diversity of small, isolated animal populations?

Human Evolutionary Biology

• Research Question: What evolutionary factors contributed to the development of bipedalism in early humans?
• Research Question: What are the key genetic adaptations that enable humans to live at high altitudes?

These topics and questions aim to inspire in-depth exploration and research, allowing students to delve into various aspects of biology, from molecular to ecosystem levels. 

Use them as an inspiration for your future Ib extended essay.

Select your topic wisely!

The world of biology is rich with diverse topics suitable for an Extended Essay. From the tiny intricacies of cellular biology to the broad complexities of environmental science, each area offers a unique perspective and a chance for in-depth exploration . 

The key to a successful essay is choosing a topic that not only interests you but also challenges your analytical and research skills.

Need Extra Support?

If you’re seeking guidance with your topic selection, or if you need assistance in writing or editing your Biology Extended Essay , our team at Writing Metier is here to help. 

Our experienced IB writers are equipped to provide the support you need to refine your ideas and enhance your writing. Contact us for personalized assistance, or simply fill out our online order form with details of your IB EE and ensure your essay is a reflection of your best efforts.

Free topic suggestions

Vasy kafidoff.

Vasyl Kafidoff is a co-founder and CEO at WritingMetier. He is interested in education and how modern technology makes it more accessible. He wants to bring awareness about new learning possibilities as an educational specialist. When Vasy is not working, he’s found behind a drum kit.

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Sat / act prep online guides and tips, the complete ib extended essay guide: examples, topics, and ideas.

International Baccalaureate (IB)

IB students around the globe fear writing the Extended Essay, but it doesn't have to be a source of stress! In this article, I'll get you excited about writing your Extended Essay and provide you with the resources you need to get an A on it.

If you're reading this article, I'm going to assume you're an IB student getting ready to write your Extended Essay. If you're looking at this as a potential future IB student, I recommend reading our introductory IB articles first, including our guide to what the IB program is and our full coverage of the IB curriculum .

IB Extended Essay: Why Should You Trust My Advice?

I myself am a recipient of an IB Diploma, and I happened to receive an A on my IB Extended Essay. Don't believe me? The proof is in the IBO pudding:

If you're confused by what this report means, EE is short for Extended Essay , and English A1 is the subject that my Extended Essay topic coordinated with. In layman's terms, my IB Diploma was graded in May 2010, I wrote my Extended Essay in the English A1 category, and I received an A grade on it.

What Is the Extended Essay in the IB Diploma Programme?

The IB Extended Essay, or EE , is a mini-thesis you write under the supervision of an IB advisor (an IB teacher at your school), which counts toward your IB Diploma (learn more about the major IB Diploma requirements in our guide) . I will explain exactly how the EE affects your Diploma later in this article.

For the Extended Essay, you will choose a research question as a topic, conduct the research independently, then write an essay on your findings . The essay itself is a long one—although there's a cap of 4,000 words, most successful essays get very close to this limit.

Keep in mind that the IB requires this essay to be a "formal piece of academic writing," meaning you'll have to do outside research and cite additional sources.

The IB Extended Essay must include the following:

• A title page
• Contents page
• Introduction
• Body of the essay
• References and bibliography

Additionally, your research topic must fall into one of the six approved DP categories , or IB subject groups, which are as follows:

• Group 1: Studies in Language and Literature
• Group 2: Language Acquisition
• Group 3: Individuals and Societies
• Group 4: Sciences
• Group 5: Mathematics
• Group 6: The Arts

Once you figure out your category and have identified a potential research topic, it's time to pick your advisor, who is normally an IB teacher at your school (though you can also find one online ). This person will help direct your research, and they'll conduct the reflection sessions you'll have to do as part of your Extended Essay.

As of 2018, the IB requires a "reflection process" as part of your EE supervision process. To fulfill this requirement, you have to meet at least three times with your supervisor in what the IB calls "reflection sessions." These meetings are not only mandatory but are also part of the formal assessment of the EE and your research methods.

According to the IB, the purpose of these meetings is to "provide an opportunity for students to reflect on their engagement with the research process." Basically, these meetings give your supervisor the opportunity to offer feedback, push you to think differently, and encourage you to evaluate your research process.

The final reflection session is called the viva voce, and it's a short 10- to 15-minute interview between you and your advisor. This happens at the very end of the EE process, and it's designed to help your advisor write their report, which factors into your EE grade.

Here are the topics covered in your viva voce :

• A check on plagiarism and malpractice
• Your reflection on your project's successes and difficulties
• Your reflection on what you've learned during the EE process

Your completed Extended Essay, along with your supervisor's report, will then be sent to the IB to be graded. We'll cover the assessment criteria in just a moment.

We'll help you learn how to have those "lightbulb" moments...even on test day!  

What Should You Write About in Your IB Extended Essay?

You can technically write about anything, so long as it falls within one of the approved categories listed above.

It's best to choose a topic that matches one of the IB courses , (such as Theatre, Film, Spanish, French, Math, Biology, etc.), which shouldn't be difficult because there are so many class subjects.

Here is a range of sample topics with the attached extended essay:

• Biology: The Effect of Age and Gender on the Photoreceptor Cells in the Human Retina
• Chemistry: How Does Reflux Time Affect the Yield and Purity of Ethyl Aminobenzoate (Benzocaine), and How Effective is Recrystallisation as a Purification Technique for This Compound?
• English: An Exploration of Jane Austen's Use of the Outdoors in Emma
• Geography: The Effect of Location on the Educational Attainment of Indigenous Secondary Students in Queensland, Australia
• Math: Alhazen's Billiard Problem
• Visual Arts: Can Luc Tuymans Be Classified as a Political Painter?

You can see from how varied the topics are that you have a lot of freedom when it comes to picking a topic . So how do you pick when the options are limitless?

How to Write a Stellar IB Extended Essay: 6 Essential Tips

Below are six key tips to keep in mind as you work on your Extended Essay for the IB DP. Follow these and you're sure to get an A!

#1: Write About Something You Enjoy

You can't expect to write a compelling essay if you're not a fan of the topic on which you're writing. For example, I just love British theatre and ended up writing my Extended Essay on a revolution in post-WWII British theatre. (Yes, I'm definitely a #TheatreNerd.)

I really encourage anyone who pursues an IB Diploma to take the Extended Essay seriously. I was fortunate enough to receive a full-tuition merit scholarship to USC's School of Dramatic Arts program. In my interview for the scholarship, I spoke passionately about my Extended Essay; thus, I genuinely think my Extended Essay helped me get my scholarship.

But how do you find a topic you're passionate about? Start by thinking about which classes you enjoy the most and why . Do you like math classes because you like to solve problems? Or do you enjoy English because you like to analyze literary texts?

Keep in mind that there's no right or wrong answer when it comes to choosing your Extended Essay topic. You're not more likely to get high marks because you're writing about science, just like you're not doomed to failure because you've chosen to tackle the social sciences. The quality of what you produce—not the field you choose to research within—will determine your grade.

Once you've figured out your category, you should brainstorm more specific topics by putting pen to paper . What was your favorite chapter you learned in that class? Was it astrophysics or mechanics? What did you like about that specific chapter? Is there something you want to learn more about? I recommend spending a few hours on this type of brainstorming.

One last note: if you're truly stumped on what to research, pick a topic that will help you in your future major or career . That way you can use your Extended Essay as a talking point in your college essays (and it will prepare you for your studies to come too!).

#2: Select a Topic That Is Neither Too Broad nor Too Narrow

There's a fine line between broad and narrow. You need to write about something specific, but not so specific that you can't write 4,000 words on it.

You can't write about WWII because that would be a book's worth of material. You also don't want to write about what type of soup prisoners of war received behind enemy lines, because you probably won’t be able to come up with 4,000 words of material about it. However, you could possibly write about how the conditions in German POW camps—and the rations provided—were directly affected by the Nazis' successes and failures on the front, including the use of captured factories and prison labor in Eastern Europe to increase production. WWII military history might be a little overdone, but you get my point.

If you're really stuck trying to pinpoint a not-too-broad-or-too-narrow topic, I suggest trying to brainstorm a topic that uses a comparison. Once you begin looking through the list of sample essays below, you'll notice that many use comparisons to formulate their main arguments.

I also used a comparison in my EE, contrasting Harold Pinter's Party Time with John Osborne's Look Back in Anger in order to show a transition in British theatre. Topics with comparisons of two to three plays, books, and so on tend to be the sweet spot. You can analyze each item and then compare them with one another after doing some in-depth analysis of each individually. The ways these items compare and contrast will end up forming the thesis of your essay!

When choosing a comparative topic, the key is that the comparison should be significant. I compared two plays to illustrate the transition in British theatre, but you could compare the ways different regional dialects affect people's job prospects or how different temperatures may or may not affect the mating patterns of lightning bugs. The point here is that comparisons not only help you limit your topic, but they also help you build your argument.

Comparisons are not the only way to get a grade-A EE, though. If after brainstorming, you pick a non-comparison-based topic and are still unsure whether your topic is too broad or narrow, spend about 30 minutes doing some basic research and see how much material is out there.

If there are more than 1,000 books, articles, or documentaries out there on that exact topic, it may be too broad. But if there are only two books that have any connection to your topic, it may be too narrow. If you're still unsure, ask your advisor—it's what they're there for! Speaking of advisors...

Don't get stuck with a narrow topic!

#3: Choose an Advisor Who Is Familiar With Your Topic

If you're not certain of who you would like to be your advisor, create a list of your top three choices. Next, write down the pros and cons of each possibility (I know this sounds tedious, but it really helps!).

For example, Mr. Green is my favorite teacher and we get along really well, but he teaches English. For my EE, I want to conduct an experiment that compares the efficiency of American electric cars with foreign electric cars.

I had Ms. White a year ago. She teaches physics and enjoyed having me in her class. Unlike Mr. Green, Ms. White could help me design my experiment.

Based on my topic and what I need from my advisor, Ms. White would be a better fit for me than would Mr. Green (even though I like him a lot).

The moral of my story is this: do not just ask your favorite teacher to be your advisor . They might be a hindrance to you if they teach another subject. For example, I would not recommend asking your biology teacher to guide you in writing an English literature-based EE.

There can, of course, be exceptions to this rule. If you have a teacher who's passionate and knowledgeable about your topic (as my English teacher was about my theatre topic), you could ask that instructor. Consider all your options before you do this. There was no theatre teacher at my high school, so I couldn't find a theatre-specific advisor, but I chose the next best thing.

Before you approach a teacher to serve as your advisor, check with your high school to see what requirements they have for this process. Some IB high schools require your IB Extended Essay advisor to sign an Agreement Form , for instance.

Make sure that you ask your IB coordinator whether there is any required paperwork to fill out. If your school needs a specific form signed, bring it with you when you ask your teacher to be your EE advisor.

#4: Pick an Advisor Who Will Push You to Be Your Best

Some teachers might just take on students because they have to and aren't very passionate about reading drafts, only giving you minimal feedback. Choose a teacher who will take the time to read several drafts of your essay and give you extensive notes. I would not have gotten my A without being pushed to make my Extended Essay draft better.

Ask a teacher that you have experience with through class or an extracurricular activity. Do not ask a teacher that you have absolutely no connection to. If a teacher already knows you, that means they already know your strengths and weaknesses, so they know what to look for, where you need to improve, and how to encourage your best work.

Also, don't forget that your supervisor's assessment is part of your overall EE score . If you're meeting with someone who pushes you to do better—and you actually take their advice—they'll have more impressive things to say about you than a supervisor who doesn't know you well and isn't heavily involved in your research process.

Be aware that the IB only allows advisors to make suggestions and give constructive criticism. Your teacher cannot actually help you write your EE. The IB recommends that the supervisor spends approximately two to three hours in total with the candidate discussing the EE.

#5: Make Sure Your Essay Has a Clear Structure and Flow

The IB likes structure. Your EE needs a clear introduction (which should be one to two double-spaced pages), research question/focus (i.e., what you're investigating), a body, and a conclusion (about one double-spaced page). An essay with unclear organization will be graded poorly.

The body of your EE should make up the bulk of the essay. It should be about eight to 18 pages long (again, depending on your topic). Your body can be split into multiple parts. For example, if you were doing a comparison, you might have one third of your body as Novel A Analysis, another third as Novel B Analysis, and the final third as your comparison of Novels A and B.

If you're conducting an experiment or analyzing data, such as in this EE , your EE body should have a clear structure that aligns with the scientific method ; you should state the research question, discuss your method, present the data, analyze the data, explain any uncertainties, and draw a conclusion and/or evaluate the success of the experiment.

#6: Start Writing Sooner Rather Than Later!

You will not be able to crank out a 4,000-word essay in just a week and get an A on it. You'll be reading many, many articles (and, depending on your topic, possibly books and plays as well!). As such, it's imperative that you start your research as soon as possible.

Each school has a slightly different deadline for the Extended Essay. Some schools want them as soon as November of your senior year; others will take them as late as February. Your school will tell you what your deadline is. If they haven't mentioned it by February of your junior year, ask your IB coordinator about it.

Some high schools will provide you with a timeline of when you need to come up with a topic, when you need to meet with your advisor, and when certain drafts are due. Not all schools do this. Ask your IB coordinator if you are unsure whether you are on a specific timeline.

Below is my recommended EE timeline. While it's earlier than most schools, it'll save you a ton of heartache (trust me, I remember how hard this process was!):

• January/February of Junior Year: Come up with your final research topic (or at least your top three options).
• February of Junior Year: Approach a teacher about being your EE advisor. If they decline, keep asking others until you find one. See my notes above on how to pick an EE advisor.
• April/May of Junior Year: Submit an outline of your EE and a bibliography of potential research sources (I recommend at least seven to 10) to your EE advisor. Meet with your EE advisor to discuss your outline.
• Summer Between Junior and Senior Year: Complete your first full draft over the summer between your junior and senior year. I know, I know—no one wants to work during the summer, but trust me—this will save you so much stress come fall when you are busy with college applications and other internal assessments for your IB classes. You will want to have this first full draft done because you will want to complete a couple of draft cycles as you likely won't be able to get everything you want to say into 4,000 articulate words on the first attempt. Try to get this first draft into the best possible shape so you don't have to work on too many revisions during the school year on top of your homework, college applications, and extracurriculars.
• August/September of Senior Year: Turn in your first draft of your EE to your advisor and receive feedback. Work on incorporating their feedback into your essay. If they have a lot of suggestions for improvement, ask if they will read one more draft before the final draft.
• September/October of Senior Year: Submit the second draft of your EE to your advisor (if necessary) and look at their feedback. Work on creating the best possible final draft.
• November-February of Senior Year: Schedule your viva voce. Submit two copies of your final draft to your school to be sent off to the IB. You likely will not get your grade until after you graduate.

Remember that in the middle of these milestones, you'll need to schedule two other reflection sessions with your advisor . (Your teachers will actually take notes on these sessions on a form like this one , which then gets submitted to the IB.)

I recommend doing them when you get feedback on your drafts, but these meetings will ultimately be up to your supervisor. Just don't forget to do them!

The early bird DOES get the worm!

How Is the IB Extended Essay Graded?

Extended Essays are graded by examiners appointed by the IB on a scale of 0 to 34 . You'll be graded on five criteria, each with its own set of points. You can learn more about how EE scoring works by reading the IB guide to extended essays .

• Criterion A: Focus and Method (6 points maximum)
• Criterion B: Knowledge and Understanding (6 points maximum)
• Criterion C: Critical Thinking (12 points maximum)
• Criterion D: Presentation (4 points maximum)
• Criterion E: Engagement (6 points maximum)

How well you do on each of these criteria will determine the final letter grade you get for your EE. You must earn at least a D to be eligible to receive your IB Diploma.

Although each criterion has a point value, the IB explicitly states that graders are not converting point totals into grades; instead, they're using qualitative grade descriptors to determine the final grade of your Extended Essay . Grade descriptors are on pages 102-103 of this document .

Here's a rough estimate of how these different point values translate to letter grades based on previous scoring methods for the EE. This is just an estimate —you should read and understand the grade descriptors so you know exactly what the scorers are looking for.

Here is the breakdown of EE scores (from the May 2021 bulletin):

How Does the Extended Essay Grade Affect Your IB Diploma?

The Extended Essay grade is combined with your TOK (Theory of Knowledge) grade to determine how many points you get toward your IB Diploma.

To learn about Theory of Knowledge or how many points you need to receive an IB Diploma, read our complete guide to the IB program and our guide to the IB Diploma requirements .

This diagram shows how the two scores are combined to determine how many points you receive for your IB diploma (3 being the most, 0 being the least). In order to get your IB Diploma, you have to earn 24 points across both categories (the TOK and EE). The highest score anyone can earn is 45 points.

Let's say you get an A on your EE and a B on TOK. You will get 3 points toward your Diploma. As of 2014, a student who scores an E on either the extended essay or TOK essay will not be eligible to receive an IB Diploma .

Prior to the class of 2010, a Diploma candidate could receive a failing grade in either the Extended Essay or Theory of Knowledge and still be awarded a Diploma, but this is no longer true.

Figuring out how you're assessed can be a little tricky. Luckily, the IB breaks everything down here in this document . (The assessment information begins on page 219.)

40+ Sample Extended Essays for the IB Diploma Programme

In case you want a little more guidance on how to get an A on your EE, here are over 40 excellent (grade A) sample extended essays for your reading pleasure. Essays are grouped by IB subject.

• Business Management 1
• Chemistry 1
• Chemistry 2
• Chemistry 3
• Chemistry 4
• Chemistry 5
• Chemistry 6
• Chemistry 7
• Computer Science 1
• Economics 1
• Design Technology 1
• Design Technology 2
• Environmental Systems and Societies 1
• Geography 1
• Geography 2
• Geography 3
• Geography 4
• Geography 5
• Geography 6
• Literature and Performance 1
• Mathematics 1
• Mathematics 2
• Mathematics 3
• Mathematics 4
• Mathematics 5
• Philosophy 1
• Philosophy 2
• Philosophy 3
• Philosophy 4
• Philosophy 5
• Psychology 1
• Psychology 2
• Psychology 3
• Psychology 4
• Psychology 5
• Social and Cultural Anthropology 1
• Social and Cultural Anthropology 2
• Social and Cultural Anthropology 3
• Sports, Exercise and Health Science 1
• Sports, Exercise and Health Science 2
• Visual Arts 1
• Visual Arts 2
• Visual Arts 3
• Visual Arts 4
• Visual Arts 5
• World Religion 1
• World Religion 2
• World Religion 3

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IB Biology EE examples

Filter exemplars, how do different concentrations of punica granatum extracts: peel, flower and leaves (10, 20, 30, 40 and 50 mg/ml) affect the rate of reaction of α-amylase and compare with metformin (anti-diabetic drug) as measured by a spectrophotometer at 587nm, what is the effect of seawater mixture (0%, 5%, 10%) on the germination of black chickpeas (cicer arietinum), green gram (vigna radiata) and fenugreek (trigonella foenum-graecum) for 5 days and their subsequent growth when watered using tap water for 10 days where growth was measured by plant height (±0.05 cm) and dry mass (±0.001 g), want to get full marks for your ee allow us to review it for you 🎯, to what extent does performing the dance styles, cha cha, viennese waltz, and modern contemporary affect human fitness levels as measured by oxygen consumption (vo2) and maximum heart rate (bpm), what is the effect of salinity stress (0, 50, 100, 150, 200 mm nacl) measured through microscopic (stomatal aperture) and morphological (leaf area, leaf dry mass, and root length) characteristics on pre-treated radish (raphanus sativus) seeds with magnetopriming (48 hours), to what extent do bioinformatic tools such as cb dock 2 and chimera help in the analysis of phytochemicals (calotropone, quercetin, thymoquinone) compared to allopathic drugs (gemcitabine, olaparib, fluorouracil) against target receptors of pancreatic cancer (human glutamate oxaloacetate transaminase 1 (got1), threonine-protein kinase bub1, and peroxisome proliferator-activated receptor gamma), fast track your coursework with mark schemes moderated by ib examiners. upgrade now 🚀, how does juice from garlic allium sativum cloves prepared in different ways (fresh raw, crushed one day prior, cooked, kept in oil, fermented in brine and fermented (black garlic)) affect the growth of a non-pathogenic strain of escherichia coli, to what extent do different concentrations of magnesium nitrate (10, 20, 30, 40, 50 mm) affect the concentration of chlorophyll a and b in ocimum basilicum at 645 nm and 662 nm wavelength using spectrophotometer, to what extent do extracts of allium sativum (garlic) and zingiber officinale (ginger) reduce antimicrobial activity and how effective it is compared to antibiotics, to what extent does inhaling e-cigarettes affect the lungs’ vital capacity of high school students in jakarta, how is the number of errors made by participants when attempting to distinguish between the temperature of two different water baths influenced by the hours slept within a 24-hour period, to what extent do different species of chili pepper consumption biologically affect the rate of lipid digestion in terms of ph change within 30 minutes, to what extent is blood pressure related to the development of alzheimer’s disease in people in age above 50, how effective is the cone repair technique when treating ebstein’s anomaly in comparison to other treatments, to what extent does the presence of acetaminophen (tylenol), polymixin b (polysporin), and diphenhydramine hydrochloride (benadryl) in the growth medium of cotoneaster acutifolius affect the average change in leaf length over a period of 15 days in five different concentrations, to what extent do phytochemicals such as resveratrol, glyceollin and epigallocatechin-3-gallate (egcg) possess comparable antibacterial effects against staphylococcus aureus bacteria to a non-prescription otitis externa (oe) treatments such as ciprofloxacin using bacillus subtilis as a prokaryotic model organism, estudio sobre el efecto de la crema dental utilizada para el cepillado de los dientes como inhibidor en la actividad enzimática de la alfa amilasa salival, how can the frameshift mutation caused by a deletion that affects the human body's melanocortin receptor gene (mcr) and leptin receptor gene (lepr) induce monogenetic obesity, to what extent does high intensity interval training (hiit) effect the maximum oxygen uptake (vo2max) in sedentary populations, investigating the effects of oil spillages on plants, to what extent does varying the duration (0 mins, 5 mins, 10 mins, 15 mins, 20 mins, 25 mins) at which a 25% solution consisting of ethanol-dissolved ayurvedic spices (curcumin and black cumin) is maintained at 60°c affect the antimicrobial activity of these spices against a k12 strain of escherichia coli, what effect do differing concentrations of the growth hormone gibberellic acid, have on the growth and mortality rates of pulses, common beans (phaseolus vulgaris l.) and common peas (pisum sativum l. (partim)), how do different concentrations of two cytokinin hormones: kinetin (0.5, 1 and 1.5 mg/l) and 6-benzylaminopurine (1.5, 2 and 2.5 mg / l) affect the growth of lactuca sativa, measured by height, number of leaves and dry mass, separately and combined over 5 weeks, to what extent is frequent consumption of ultra processed food related to prevalence of overweight and obesity among high school and college students, in poland and in thailand, how does the pollution of oestrogens into freshwater systems affect the biological processes of fathead minnows, to what extent does the abundance of hormosira banksii influence biodiversity at different positions on the intertidal rocky shore, how does the duration of exposure time to ultraviolet light affect the growth of saccharomyces cerevisiae, to what extent do various concentrations of piper betle extract (1%, 2%, 3%, 4%, 5%) affect the enzymatic activity of the digestive enzyme amylase, protease and lipase on their substrates (starch, casein and milk) in the the process of digestion and the estimation of vitamin c concentration in piper betle, ¿cómo los cambios en la luminosidad con niveles de 0, 2 500 y 5 000 lux, en focos de 25 y 50 watts respectivamente, afectan a la fijación de dióxido de carbono (co2) en la sansevieria trifasciata zeylanica biología nm, knowing that fingerprints are always different, but the core is identical, to what extent is it possible to see other similarities between the minutiae of close family members, to what extent does irrigation with carbonated water affect the ferric ion (fe3+) nutrient content of brassica oleracea ‘black tuscany’ microgreens, ¿cómo se estudia el angioedema hereditario, su diagnóstico, tratamiento, síntomas y etiología en humanos, to what extent does the efficiency of lactase enzyme found in different types and brands of dietary supplements (vitaplus innolact lactase dietary supplement film-coated tablet, millandjoy lactase enzyme chewable tablets, lactase comfort drops, dr. chen soft capsule, sanct bernhard lactase enzyme capsule) differ if the prescribed dosage used, measured as the amount of glucose produced after being treated with different supplements in a given time period (30sec, 60sec, 90sec, 120sec, 150sec), the impact of ph on chlorella vulgaris, how do different concentrations of salicylic acid (1mm and 1m) affect growth of radishes (raphanus sativus), under drought, osmotic and cold stress, as well as normal conditions, is it possible for physarum polycephalum (the blob) to adapt and learn to cross an obstacle placed in its way to reach a determined goal, this obstacle being normal table salt (nacl)., factors affecting the frequency of turn alternation in porcellio scaber (common rough woodlouse), the effect of sucrose concentration on the percentage change in carbon dioxide during ethanol(yeast fermentation), the impact of ph on chlorella vulgaris, to what extent does animal rennetassist lactic acid bacteria in the fermentation of milk during the production of cheese curds.

100 IB Extended Essay Topic Ideas!

One of the biggest keys to the Extended Essay is choosing which subject you want to write your work in and developing that crucial research question. Read on to find inspiration for topics across a wide range of subjects.

Extended Essay: The Love/Hate aspect of the IB

One of the biggest keys to the Extended Essay is choosing which subject you want to write your work in and developing that crucial research question. Annoyingly, coming up with that idea and research question can be the toughest part of the entire process. Writing 4,000 words about something you are interested in is a big ask and it often feels impossible to narrow down your thoughts. To make everything super clear, here are 100 Extended Essay Topics for you to draw inspiration from! Use these as a springboard to create your own research question !

Get Support from A Top Tutor Today

At Lanterna we have over 300 tutors who smashed their Extended Essay. They know exactly how to get an A in your EE and can give you tips and tricks on how you can do the same. What are you waiting for? Get your own tutor today !

How to Begin Your IB Extended Essay

To make everything super clear, here are 100 Extended Essay Topics for you to draw inspiration from! Use these as a springboard to  create your own research question !

Get Support from a Top Tutor Today

At Lanterna, we have over 300 tutors who smashed their Extended Essay. They know exactly how to get an A in your EE and can give you tips and tricks on how you can do the same. What are you waiting for? Get your own tutor today!

10 Steps to Writing an Extended Essay

Before we look at specific topics for your essay, let’s recap the 10-steps you’ll need to follow to complete your extended essay.

1. Define the Topic and Draft the Research Question

2. Create a Timeline

3. Identify and gather Sources

4. Set Deadlines

5. Plan the structure according to the total word count

6. Evaluate

7. independent Research

8. Write the extended essay draft

10. Present

By following the steps above, you should be able to produce a logical and coherent rationale to follow when writing the extended essay for your IB diploma programme.

By starting with a solid research question, you’ll be able to put an extended essay of global significance together, from the research and writing process all the way through to your final submission with a favourable extended essay grade.

Below, we’re sharing 10 topics across 10 subjects to inspire your next IB extended essay.

1. How the change of habitat affects an X organism?

2. How does climate affect the growth of X plant?

3. Can photosynthesis take place without sunlight?

4. What is the effect of age and gender on the photoreceptor cells in the human retina?

5. How is climate change impacting the appearance of coral reefs?

6. An evaluation of how  antioxidants  work in our bodies?

7. Does hand sanitizer, hand soap or antibacterial wipes have the greatest ability to inhibit the growth of E. Coli?

8. To what extent do live cultures in yogurts/milk/other dairy products reduce the concentration of lactose present over the course of a 2 hour incubation period at x°C?

9. What is the relationship between  population density  between X and population size of X?

10. What is the relationship between indoleacetic acid, a growth hormone, and the growth of X (a crop)?

11. How does human influence impact an aquatic ecosystem?

12. How can one organize a pollution check along a X canal in X?

13. What is the effect of the increased ecological footprint in the  Amazon ?

14. What are the forest and woodland restoration in Siberia, Russia and which one is most effective?

15. How does human interference cause ecological imbalances in an X city/country/continent?

16. What is the impact of urban development on the  bee population  in X city?

17. What are the differences in the conversation efforts in Yosemite National Park (California, USA) and the Lake District National Park (UK)?

18. To what extent have healthcare policies in X country influenced their human population curve?

19. How have changes in environmental systems influenced the value system of X country?

20. How has X landfill site affected the surrounding terrestrial ecosystem?

21. What is the profitability of  airline companies ?

22. How does unemployment affect the market?

23. Why did X recession occur?

24. How did the financial Policy affect the economy in X?

25. How effective are government policies in reducing overconsumption of alcohol (specifically hard liquor)?

26. To what extent are public buses and subways substitute goods in a country?

27. How did the tax reform in country x affect its growth and development? (many countries to choose from)

28. To what extent was weak government policy responsible for the Latin American financial crisis of 1997?

29. How effective is the  Big Mac Index  in measuring purchasing power parity?

30. To what extent would the UK suffer from leaving the European Customs Union if Brexit happens?

31. Is there an association between viewing violence on television and the display of violent acts?

32. What motivational climate should a coach employ in order to achieve optimal performance in athletes?

33. How does  X hormone affect human behavior ?

34. Compare theories explaining altruism in human behaviour

35. Discuss short-term and long-term consequences of exposure to violence

36. Why do relationships change or end?

37. Discuss how  social variables (poverty, parenting, educational environment) may the affect cognitive environment.

38. To what extent do mirror neurons play a role in empathy? (2014)

39. To what extent does Mindfulness help people cope with General Anxiety Disorder (GAD)?

40. To what extent is drug therapy effective in the treatment of bipolar disorder?

41. Does the British Parliamentary reforms act of 1832 deserve its title as the great reform act?

42. To what extent are there similarities in Hitler and Mussolini’s Rise to Power?

43. To what extent did Mao’s tackle the problems which he faced?

44. Was Tsar Alexander II of Russia reforms a success or failure?

45. To what extent was the bombing of Dresden in 1945 justifiable?

46. To what extent can  Sweden be considered neutral during WWII ?

47. The impact of structural economic weakness on the collapse of the Soviet Union.

48. How were women treated differently in 1920s and 1950s Great Britain?

49. Why did Israel win the  Six Day War  of 1967?

50. What role did economics play in the unification of Germany from 1834 to 1871?

English Literature

51. What are the Compare and Contrast Jane Austen Books?

52. How does Joseph Conrad’s portray Racism in A Heart of Darkness?

53. How does Arthur Miller’s Death of a Salesman critique today’s capitalist society? The American Dream?

54. To what extent does Chris McCandless in Jon Krakauer’s Into the Wild escape familial influence?

55. What are the similarities and differences between J.K. Rowling’s characterization of Severus Snape in Harry Potter and the Philosopher’s Stone and Harry Potter and the Deathly Hallows?

56. How does Yaa Gyasi use structure in her novel Homegoing to portray the evolution of time?

57. What is the impact of the social context on Holden Caufield and Huckleberry Finn?

58. How does Sylvia Path’s use of Inanimate objects in Bell Jar?

59. How is the empowerment of Feminine portrayed in the Lord of the Rings?

60. Compare the political rhetoric as used in the inaugural addresses of George W. Bush, Barack Obama, and Donald Trump.

61. The design, construction and calibration of an apparatus for measuring lipid concentration in milk.

62. What is the effect of a change in the optimal lift on the horizontal gliding distance of an aircraft?

63. How does the sugar concentration affect the refractive index of water?

64. How does temperature affect the viscosity of X juice/soda?

65. Is the relationship between temperature and conductivity and insulators and conductors?

66. What is the Oberth Effect?

67. What is the temperature dependence of work performed on an AA battery?

68. How can the rotational frequency of a fan driven by a flame measure distance?

69. Do wine bottles of different shapes behave as Helmholtz resonators?

70. How does the diameter of a wheel affect stability in different weather conditions?

71. What factors influence the location of industries in country/city X?

72. An investigation into the significance of preserving the quality of water in a continent/country/city?

73. An investigation into the degree to which City X can be considered a Sustainable City/Community.

74. To what extent is Biodiversity being managed successfully in city X?

75. To what extent does the education and employment of women affect Country x’s fertility rate?

76. To what extent do gender, educational attainment, and working parameters influence obesity risk?

77. To what extent has urban development affected human thermal comfort levels in Country/city x (a country/city that has developed in a rapid rate over the past decades)?

78. To what extent is the Company x corporate waste management program effective, demonstrating environmental sustainability?

79. To what extent is biodiversity being managed successfully at National Park X?

80. What types of urban design encourage high rates of vandalism in X neighbourhoods?

81. The kinetics of Enzymatic Reactions.

82. How do Iron Intake Diets differ in X country?

83. What are the different factors that affect the iodine values in cooking oils?

84. What is the effect of standing time and temperate on the acid content in X juice or soda?

85. Can caffeine in tea or coffee be reduced?

86. What is the effect of temperature on the souring of milk?

87. What are the sources of error in calorimetry?

88. Does brushing your teeth affect the pH in your mouth after eating?

89. How does changing the concentration of the reagents affect the formation and spacing between Liesehang rings in the reaction between X chloride and X when conducted in a test tube?

90. What effect does the coating of aspirin tablets have on the hydrolysis of aspirin?

Social and Cultural Anthropology

91. How clothing relates to the cultural anthropology of X culture.

92. The extent to which social media networks affect different societies.

93. The relationship between ritual, myths and faith in an X society.

94. The history of rituals in X culture.

95. How different marriage rituals inform the cultural anthropology of X culture.

96. Climate change and its impact on the evolution of different creatures on the planet.

97. Understanding the social and cultural anthropology of the supernatural in X culture.

98. An analysis of body modification in relation to social and cultural anthropology.

100. Chaste systems and social ranks in societies.

There are so many class subjects that can form the basis of your extended essay, including these popular six subjects:

– Information technology

– Computer science

– Health science

– World studies

– Visual arts

– Business management

Extended essays are a great way to improve your writing skills in academic writing. Essays of a high standard that demonstrate critical thinking and in depth analysis can be submitted to academic journals. These have the potential to reach the global society.

Start Writing Your Extended Essay Topic

We hope this gave you some great inspiration for the variation of topics available for your Extended Essay . The research question you select is what will carry you through the entire process, so be sure to choose wisely!

Remember, if you are looking for more help with your Extended Essay, make sure to check out our guide which will tell you exactly how to plan, structure, research and write your Extended Essay!

Grab Free Extended Essay Resources!

No matter the subject groups in your diploma program, we’re here to help all of our IB students. Whether you’re writing about social and cultural anthropology, business management, design technology, or scientific methods for your IB diploma, Lanterna has you covered.

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Extended Essay: Sciences: Biology

• Step 1 - Choosing a Subject
• Step 2 - Choosing a Topic
• Step 3 - Draft a Research Question
• Step 4 - Finding Sources
• Step 5 - Evaluating Information
• Step 6 - Bibliography & Citation
• Step 7 - Organizing Information
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• Individuals & Societies: Business Management
• Individuals & Societies: History
• Individuals & Societies: Psychology
• Language Acquisition
• Language and Literature
• Sciences: Biology
• Sciences: Sports, Exercise, and Health Sciences
• Interdisciplinary Papers: World Studies
• Assessment Criteria
• Research Questions
• Investigation

Extended Essay in Biology

Extended Essays in Biology

Choosing a topic

Choosing a Topic

Biology is the science that deals with living organisms and life processes. A biology EE should incorporate biological theory and emphasize why it is relevant today.

The topic must relates specifically to biology. Many topics can be approached from different viewpoints, but for an EE in biology the treatment of the topic must be clearly biological. For example, an EE in an interdisciplinary area such as biochemistry will, if registered under the subject of biology, be judged solely on its biological content.

Disease, for example, could be considered through many different lenses. A biology paper about diseases would focus on their impact on particular organisms or life processes, and not on medical treatment, or the economic effects of the disease on society.

Approaches to research

Primary Research

Essays in biology may be based on data collected by the student through:

Essays that involve lab work, or fieldwork, should include a clear and concise description of the experimental procedure. Students taking an experimental approach must also consult secondary sources.

Secondary Research

Students can base their essays on data or information obtained from literature (secondary studies). However, in this case they should use the data in an original way. Essays that simply restate facts or data taken directly from the sources are of little value.

Biology Sources

Even students doing primary research will still need to reference secondary sources. And students relying entirely on secondary sources will need to find sources not only of written information but also experimental data which they can analyze.

Writing the Essay

An essay in the sciences requires is more than just generating and presenting data. Analysis of the data is also essential. The main body of the essay should consist of an argument or evaluation based on the data or information presented . You can gather your own data through a variety of methods, or rely on secondary data. You should use graphs, tables, or diagrams to point out the significance of your findings.

You should ensure that the main body of the essay is well structured and has an obvious logical progression. You can use numbered and headed paragraphs to impose a clear structure. Your evaluation should show that you understand the the data they have collected and its significance to the world.

In your analysis, you should also describe and explain the limitations imposed on the research by factors such as

• the suitability and reliability of the sources accessed
• accuracy and precision of measuring equipment
• sample size
• validity and reliability of statistics

Students  should also consider biological limitations such as:

• those arising from the problem of repeatability and control when using living material
• the difficulties of generalizing from research based on a single type of organism or environment.

Exceptions for Safety and Academic Honesty

Safety and Ethics in Choosing a Topic

In all cases where human subjects are used as the basis for an investigation, clear evidence of informed consent must be provided in accordance with the IB guidelines.

Some topics may be inadmissible because their means of investigation are unethical. For example, investigations that:

• are based on experiments likely to inflict pain on, or cause stress to, living organisms
• are likely to have a harmful effect on health, eg culturing micro-organisms at or near body temperature (37°C)
• involve access to, or publication of, confidential medical information.

Some topics may be unsuitable because of safety issues. Adequate safety apparatus and qualified supervision is required for experiments involving dangerous substances such as:

• toxic or dangerous chemicals
• carcinogenic substances
• radioactive materials.

Other topics may be unsuitable because the outcome is already well known and documented in standard textbooks.

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What I learned from messing up my biology extended essay

Each year we invite IB alumni to share their experiences, interests and advice with our global community in the  graduate voices  series. We welcome Diploma Programme (DP) graduate Lim Hui Yuan to share some tips and advice to DP students completing their extended essays after completing her DP education at Hwa Chong International School .

By Lim Hui Yuan

I’m sure all the current and past IB students know the hardship of completing an Extended Essay (EE). And for those who are not familiar with EE, it is actually “ an independent, self-directed piece of research ”, which culminates into a 4,000-word paper.

To many (including me), EE was a real boot camp training because of the effort and tenacity it requires one to possess. Well, it was quite daunting a time for me, BUT—I have to admit that I learned a lot from messing up my project. Looking back, the nine months I spent on my EE was indeed an endurance experience.

Here are my takeaways from almost failing my Biology EE. Some of them might be relevant to other EE subjects, but they mainly revolve around the challenges I personally faced.

Knowing what you’re interested in isn’t always that easy

They always say, “follow your heart”

“Pick a project topic that you are interested in.”

Sometimes, we might not even know what our heart wants and where our interests actually lie. We students face a dilemma when choosing an EE subject or topic in the same way we are confused when standing at the junction of deciding which university path to choose.

There is a plethora of topics that we could work on, but not all of them could keep us motivated for more than half a year. I chose, “The Efficacy of Natural Plant Extracts and Commercial Disinfectants in Reducing Bacterial Growth.”

I like to think of it like becoming a gardener. Your project starts off small, you have to nurture it, and once the research topic is settled, it just keeps growing. In the end, you’ll have an EE that has grown from just a tiny seed into a big plant you are really proud of.

Nevertheless, I came to realise that no matter what topic you choose, as long as you pour your heart into it, you will not regret the outcome.

Asking yourself, “ why do I want to do this project?” helps to keep you on the right track (even if the answer was “to get a good grade”).

Failing is more common than succeeding

After diving into my biology EE, I realised how easy it was to carry out experiments in class compared to conducting your research project. There’s no lab manual you can simply refer to. Instead, you have to create your own recipe , adapting from previous work. And since it’s your own custom-made experiment, you can never predict how the results will turn out.

As much as you try to fix the controlled variables, it seems like you can’t control the outcome of the study.

In my case, I expected some of the plant extracts to show antibacterial properties. However, I underestimated how mischievous the bacteria can be, contaminating all my plant samples.

I took the success of the experiment for granted.

This bump went on for over five months. At one point, I was so traumatised by the lack of progress that I couldn’t bring myself into the lab. Frustrated and drained, I was on the verge of giving up.

Here’s when you should take a breather to flush away the negative emotions and reset everything—including your impression of the project itself.

Learn to move on

Just as the wise Ryan Higa mentioned, “ here’s a bridge; now, get over it ”.

Whatever will happen has happened and all you can do is to move on.

After getting yourself ready for a fresh start, you should turn on troubleshoot mode and make amendments to your procedures. Try to pinpoint the problem and then search for plausible solutions to tackle it. The trial and error method is the only way!

Imagine beginning to piece a puzzle together; you usually know what the big picture looks like first before connecting the parts. The same applies to your EE. Plan ahead.

Set mini-deadlines as you draft your action plan. The timeline is essential so that you don’t feel too overwhelmed by a load of work (especially when you have a month left to write your EE after getting your results, which was exactly my case).

Be careful not to be too optimistic with the progress of your experiments. I expected and planned that mine would take at most two months to finish, but I completely neglected some time factors such as time needed for the bacteria to incubate, to make the agar plates, the opening hours of the lab (which leaves me only a few hours after school), and of course , failures.

You may have a supervisor to nag you about your EE progress. However, once you’re out of high school, nobody will be there to alarm you and snoozing off will cost you more than just your grades.

You’re not alone on this

If it weren’t for my EE supervisor and friends, I would’ve given up.

My EE supervisor kept encouraging me and taught me how to endure an initial lack of results, and I’ve learned since then that this is actually a norm of scientific research . One of my best friends, who was also doing a biology EE, took his time to teach me how to write a biology EE amidst his busy schedule (you know who you are, thank you!).

Remember to discuss your difficulties to your advisor or friends; they’ll be your pillar of support.

EE is not only here to prepare you for undergraduate research, but also provide a resilient attitude for life, in general.

Honestly, I’m quite grateful that I faced so many problems during the process. It feels like playing a game with many obstacles and overcoming each hurdle leads you to a higher-level ranking. I am, by no means, a “Legend”, but I’ve certainly passed the “Rookie” level.

P.S. Remember to pat yourself on the back after completing your EE. After all, you’ve shed blood, sweat and tears into raising your seedling into a plant.

Lim Hui Yuan is a graduate of Hwa Chong International School , Singapore. She is currently pursuing her degree in science, specifically a major in Molecular Biology and Biotechnology, at the University of Hong Kong. She likes to experiment with new things and loves dancing and cooking. Also, you can find her binge-watching dramas most of the time.

To hear more from Diploma Programme (DP) graduates check out these  IB programme stories. If you are an IB grad and want to share your story, write to us at [email protected].  We appreciate your support in sharing IB stories and invite you to connect with us on LinkedIn , Twitter and now Instagram !

If you enjoyed this story, consider reading more below:

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About the IB

Free Biology Essay Examples & Writing Tips

Don’t know what to write about in your essay on biology? Looking for good biology essay examples for inspiration? This article has all you need!

A biology essay is a type of academic paper that focuses on a particular topic of biology. It can discuss animal life, cycles in biology, or a botanic subject. You will need to demonstrate your critical thinking skills and provide relevant evidence to support your perspective.

On this page, you will find examples of biology essays. You will also find here tips and topics prepared by our experts . They can assist you in nailing your short or extended essay.

Areas of Research for Biology Essays

If you’ve been assigned to write a biology essay, you probably know which area of research you have to choose. However, it might be beneficial to explore other available scopes. It’s useful for both interdisciplinary study and the cases when you are free to pick your area of research. In this section, let’s figure out what you can study in biology.

Here are biological areas of research you should be familiar with:

• Cancer Biology studies this type of disease to prevent, detect, diagnose and cure it. The ultimate goal of such biologists is to eliminate cancer.
• Cell Biology is a branch that studies the structure, function, and behavior of cells. Here, biologists study healthy and sick cells to produce vaccines, medication, etc.
• Biochemistry is an application of chemistry to the study of biological processes on cell and molecular levels. It is a cross-discipline between chemistry and biology. The focus is on the chemical processes of living organisms.
• Computation Biology is a study of biological data that develops algorithms and models to understand biological systems. Here, scientists either work for institutions or research for private enterprises.
• Genetics is an area that focuses on the study of genes and genetic variations for health benefits. It looks at the way DNA affects certain diseases.
• Human Disease is an area within which scientists study different diseases. The field covers cancer, developmental disorders, disease genes, etc.
• Immunology is a branch of biology that focuses on immunity. Immunologists look at the way the body responds to viruses as a way to protect the organism.
• Microbiology studies all living organisms that are too small for our eye to see. It includes bacteria, viruses, fungi, and other microorganisms.
• Neurobiology is the study of the nervous system. Biologists examine the way the brain works and look into brain illnesses.
• Stem Cell and Developmental Biology seeks to examine how the processes behind stem cell’s ability transform cells. The biologists in this area use the power of stem cells to model human illnesses.

Essay on Biology: Writing Tips

Want to know how to start a biology essay? Wondering about the best way to write your essay on biology? Then check out the following tips.

When you’re writing about biology, pay attention to the following features:

• Introduction . Just as in any other form of academic writing, the first section of your paper introduces the subject. Here, explain why your ideas are relevant to biology as a science.
• Thesis Statement. The final one or two sentences of the first paragraph should include your original hypothesis and experiment. You will be proving them in the main body. You do not have to include the results as the reader will encounter them later. If you’re struggling with this part, try our thesis generator .
• Main Body. In this part, write about all the experiments in detail. Often, teachers require to include visual aid to prove your point. For Zoology, Anatomy, Botany, it is pretty easy to find some photos and illustrations.
• Conclusion. Here, restate your thesis. Reemphasize the most critical aspects described in the main body. You can do it by using our summarizing tool . The goal of this last paragraph is to leave an everlasting impression on the reader.

Thank you for reading our article. We hope you found it helpful. Share it with your class peers who also study biology. Additionally, have a look at the biological essay examples below.

810 Best Essay Examples on Biology

Grass and its importance, the benefits of animals to humans essay.

• Words: 1166

Biology of Grasses: Description and Importance

The effect of temperature on amylase activity.

• Words: 1293

Effects of Vinegar on the Germination Rate of Mung Beans Seeds

• Words: 1750

Ubiquity of Microorganisms

• Words: 2210

Anaerobic Respiration and Its Applications

• Words: 1274

Bronfenbrenner’s Bioecological System Theory

• Words: 1827

Seed Germination Experiment: Results and Discussion

Strawberries history.

• Words: 1484

Dark or Light Skin: Advantages and Disadvantages

Mitosis and meiosis in onion root tip.

• Words: 1691

Botany and Taxonomy of the Onion

• Words: 2414

Nanobiotechnology, Its Advantages and Disadvantages

Substrate concentration and rate of enzyme reactions.

• Words: 1730

Browning Reactions Explained

Mung seed germination patterns under varying ph values, pets and people, similarities and differences of photosynthesis and cellular respiration, the c-fern plant laboratory experiment.

• Words: 1101

Aspects, Importance and Issues of Biodiversity

Transpiration process in plants, osmosis through a potato slice dipped in solutions of varying concentrations.

• Words: 1075

Lemon, Its Origin and Production

• Words: 1115

Rabbit Muscular System Dissection Report

Seed germination and osmosis.

• Words: 1127

Vitamin A: Description and Usage

Characteristics of adult development.

• Words: 1311

Pollutants Effects on Cellular Respiration Rate

• Words: 1434

Description of Mitosis and Meiosis

Microbiology: zygomycota, ascomycota and basidiomycota, responsible house plant keeping.

• Words: 2262

Importance of the Brain in Human Body

Biochemistry dogmas and their impacts on biotechnology, mitosis in onion root and whitefish blastula, ethnobotanical uses of plants.

• Words: 1938

Photosynthesis As A Biological Process

The insect effect on human life, the characteristics and importance of nervous system.

• Words: 1705

Archaea and Bacteria Prokaryotes Dichotomous Keys

The human family tree development, co-evolution: angiosperms and pollinating animals, understanding the effects of quantity of light on plants growth.

• Words: 1089

Different Ecosystems and Living Things

Common biochemical cycles, a study of the brine shrimps and their natural environment.

• Words: 1937

The Digestive System in the Human Body

The thermoregulation is and its importance, digestion, absorption and assembly of proteins.

• Words: 1456

Anaerobic Capacity: Power Endurance and Fatigue Index

Life in the bottom of the ocean and its protection.

• Words: 1529

Cell Organelles, Their Functions, and Disease

• Words: 1195

Olfactics and Its Importance for Living Beings

• Words: 1446

The Function and Structures of the Human Heart

Microbial growth and effect of ph on it.

• Words: 1330

The Integumentary and the Skeleton System

• Words: 1100

Cells, Tissues, and Major Organs Systems

• Words: 2269

Dugesia, a Planarian With Its Peculiar Characteristics

• Words: 3207

Forensic Procedures: Hairs and Fibres

• Words: 2067

The Process of a Prenatal Child’s Development

Eukaryotic and prokaryotic cells: key differences, corn plant’s developmental stages, invertase enzyme: description and role.

• Words: 1151

Molecular Biology. Production of pET28b and EGFP Clones

• Words: 4609

Cane Toad: Introduction and Threat

• Words: 1018

Operant and Respondent Conditioning

Digestive journey of cheeseburger, climate change and threat to animals, environmental microbiology overview.

• Words: 3298

Natural Sciences. The Phenol Red Broth Test Experiment

• Words: 1156

Plant Growth and Development With Music

Marine life in united arab emirates.

• Words: 1474

Telescope and Microscope Discovery Combo

• Words: 1932

Vaquita – Endangered Species

• Words: 1367

Whether or Not Human Cloning Should Be Allowed

• Words: 1350

The Anatomy and Physiology of the Nervous System of a Rat

• Words: 1612

Falling in Love as Part of Natural Selection

• Words: 1085

Basic and Applied Biology: Key Differences

Is earthworm beneficial or harmful to humans, epithelial tissue: structure and functions, case study: human body water balance, membrane hands-on laboratory report.

• Words: 1176

DNA Barcoding Sequence Analysis of Unknown Plant

• Words: 1315

The Kingdom Fungi: The Structure, Characteristics

Plant resource allocation: materials and methods.

• Words: 1182

Cell Counting and Measurement Under Magnification

• Words: 1641

The DNA Extraction Procedure: Scientific Experiment

A brief discussion of animal and plant cells, psychophysics: definition & fundamentals.

• Words: 1606

A Peptic Ulcer: Medical Analysis

• Words: 1185

Reproductive Isolation and Its Potential Effects

Soil impact on the growth of plants.

• Words: 1227

History Of Biotechnology

• Words: 1908

Yeast and the Fermentation Process

Lipids: fatty acids and glycerols, biology: photosynthesis and respiration, the effect of different shampoos on the bacteria growth.

• Words: 1737

“The Egg and the Sperm” by Emily Martin Critique

• Words: 2577

Botany and Zoology in the Classroom

• Words: 1631

Evolution of Predator and Prey Pairings

Cell culture and biomedical applications.

• Words: 1485

Rosalind Franklin: The Discovery of the DNA Structure

Food macromolecules – lipids, carbohydrates, and proteins, history of potatoes, their vatiety, and popularity.

• Words: 1233

Planting Bamboo: The Role of Photosynthesis

The importance of sleeping and dreaming, researching the physiology of the eye.

• Words: 1122

How SCOBY Changes Its Environment: Lab Experiment

• Words: 1214

Microbiology and Its Role in Healthcare

Microbiological studies, applications, and current discoveries, how the human eye works analogous to a camera, brine shrimp habitat, the genus rosa’s adaptation to the environment.

• Words: 1144

The Euphorbia Plant Modification and Adaptation

Human circulatory system and evolution, physiology of uromastyx aegyptia.

• Words: 1340

A Study of “Escherichia Coli”

Melanin theory as a pseudoscientific claim.

• Words: 1645

Vertical Stratification

Domesticated, cultivated, and wild species.

240 Interesting Biology Topics for Essays & Research Papers

Biology is often called the science of life . From bacteria to whales, biologists study all kinds of organisms. Have you ever wondered why bees dance? Or how can chickens be the closest modern relatives to dinosaurs? The buzzing world is full of complex wonders like these. That’s why it’s so easy to find a biology research topic of your liking.

Our specialists will write a custom essay specially for you!

If you need to craft a biology essay, this article is for you. Here you can learn about research areas and fields in biology. Besides, you will find 220 interesting biology topics to write about. Read on to refresh your knowledge of microbiology, epidemiology, and more.

Tight deadlines are demanding for all students. Luckily, our custom writing service is there for you! With our help, your biology project will be done in no time.

🔝 Top 10 Biology Research Topics

📚 areas of research in biology, ⭐ top 10 interesting biology topics for essays, 🍎 biological topics for high school.

• 🦠 Microbiology Topics
• 💀 Anatomy & Human Biology
• 🔬 Cell & Molecular Biology
• ♻️ Environmental Biology
• 🐬 Marine Biology
• 🌻 Plant Biology
• 🧬 Evolutionary Biology
• 👶🧑 Developmental Biology
• 😷 Epidemiology & Population Topics in Biology
• 📜 History of Biology

🔍 References

• Are viruses alive?
• How do emotions work?
• What is the role of hormones?
• Ways to recover endangered species
• Are allergies a sign of immune disorder?
• What is the function of chromosomes?
• Robert Hooke’s contribution to biology
• The difference between Darwinism and evolution
• The process of bacterial invasion of the body
• Ways to strengthen the human immune system

Biologists operate on a vast scale. Naturally, there are plenty of research areas. Let’s sort them out:

• Microbiology. Microbiologists examine minute organisms. Many of them, such as viruses, can cause infectious diseases. Because of this, microbiology is strongly linked with immunology.
• Anatomy. Anatomical research focuses on the structure of tissues and organs.
• Cell and molecular biology. Cells are the basis for every living being. The key topic in this area is the molecular organization of cells.
• Environmental biology. Our environment needs support, and environmental biologists provide it. They study ecosystems to find out how humans affect nature. Scientists in this area also observe how organisms react to their surroundings.
• Marine biology. This branch is concerned with life in the deep seas. Oceanography is a crucial part of marine biology.

• Botany. This study is also called plant biology. It studies the properties of organisms that need sun and water to survive. Common categories of plants include trees, shrubs, and flowers.
• Evolutionary biology. All that lives is always evolving. Organisms create, merge, and delete genes. Evolutionary biologists monitor these changes.
• Developmental biology. Research in this area includes studying tissue regeneration and cell growth.
• Epidemiology. Epidemiologists investigate diseases and health conditions. Key questions include: Where does a disease originate from? How does it transmit? What risks are there?

With this overview in mind, you’re ready to choose an interesting biological topic.

• 4 types of biotechnology
• Main branches of biochemistry
• Pros and cons of gene therapy
• Exobiology vs. astrobiology
• Biological functions of the DNA
• Levels of biological organization
• Properties of the phylogenetic tree
• Classification of invertebrate animals
• History of modern light microscopes
• The early modern period of plant systematics

From peas to platypuses: high school biology covers a wide range of topics. In your biology essay, you’ll have the chance to familiarize yourself with any of them. Your options are almost endless! Consult our list of 20 popular ideas to get your research started:

Just in 1 hour! We will write you a plagiarism-free paper in hardly more than 1 hour

• Compare the types of cell reproduction. 
• How did Gregor Mendel discover heredity? 
• Cell structure: prokaryotes vs. eukaryotes . 
• Enzymes : what do we need them for? 
• Explain how photosynthesis converts CO2 into O2. 
• How does the human metabolism work? 
• What are the differences between mitosis and meiosis?  
• How do you predict the probability of inheriting a gene? 
• Describe the structure of DNA.  
• What is PCR used for? 
• Biotechnology: the mechanisms behind cloning . 
• Survival of the fittest: what does natural selection mean? 
• Discuss the latest evidence for Darwin’s theory of evolution. 
• The tree of life: how does this concept depict the relationships between species? 
• What kind of strategies do organisms use to get nutrition? 
• Dinosaurs and their modern relatives: what do we know about them? 
• How does our nervous system transport information? 
• Explain the mechanisms behind the carbon cycle. 
• Examine the human impact on biodiversity . 
• What factors regulate population dynamics ? 

🦠 Microbiology Research Topics for Students

The world of microbiology consists of tiny organisms. Researchers study microbes and other simple life forms such as bacteria and fungi. This way, they aim to solve environmental as well as medical issues.

• How do microbes develop resistance? 
• Give an overview of our immune system’s defense mechanisms. 
• Contrast the types of microbiomes . 
• What are the industrial applications for microbiology ? 
• How do you degrade soil pollutants using microbes? 
• Investigate examples of agents that kill bacteria. 
• What makes yeast versatile? 
• The differences between virions and viroids. 
• What are acellular agents? 
• Give an overview of the biochemical properties of fungi . 
• What are possible causes for asthma ? 
• The relationship between stress and our immune system’s performance. 
• How do vaccines work? 
• Examine the structure of archaeal genes. 
• Why is microbial diversity important? 

• How do microbes contribute to an ecosystem? 
• The role of microbes in food contamination. 
• How do bacteria turn milk into yogurt? 
• Applications of microbial biotechnology. 
• Describe the four groups of protozoa. 

💀 Anatomy & Human Biology Topics

Human biology studies people as single organisms and in the context of populations. Two of its essential parts are anatomy and anthropology. The latter studies the evolution of humankind. The former is more concerned with body structure. Combine all three subjects to gain a 360° view of humanity!

• Describe the functions of the respiratory system.  
• What happens to your body if you’re anemic ? 
• Outline the history of the human population. 
• How does medical anthropology help us understand health? 
• Reading bones: what types of information can osteologists gather? 
• Biomechanics: what makes humans move? 
• Compare the proposed effects of various current trends in nutrition . 
• Explore the psychological factors that influence one’s health. 
• How does your brain control your behavior? 
• Synapses: structure and mechanisms. 
• Explain how kidneys filter blood. 
• What regulates muscle contraction ? 
• Discuss the new reproductive technologies from an anthropological perspective. 
• Describe the structure of a skeletal muscle fiber. 
• The cerebral cortex: what does it do? 
• Brain, hormones, and emotions. 
• Functions of the sodium-potassium pump. 
• Examine what blood consists of. 
• What happens when your heart skips a beat? 
• Is the growth in the human population out of control? 

🔬 Cell & Molecular Biology Research Topics

Your body’s fundamental structure is made up of cells. Their properties are in the center of interest for cell biologists. They investigate a cell’s life cycle and its vital functions. On a molecular level, this includes the role of chemical processes in cell activity.

• How does cancer affect the body’s cell growth? 
• The protein paradox: what is the right amount of protein? 
• How do cells heal bones? 
• The ethics of stem cell research . 
• Investigate the communication methods between cells. 
• Explore the link between the environment and our DNA. 
• Current trends in molecular biochemistry. 
• Telomerase: will it ever be possible to reverse aging processes? 
• What do we know about axon guidance? 
• Where does our brain keep the memories? 
• Why do cells become sticky? 
• High-resolution microscopy: ways to advance molecular research. 
• How do cilia move cells? 

• Treating glaucoma : is surgery always necessary? 
• The role of microtubules in the nervous system. 
• Diffusion : means of transport within cells. 
• What does the central dogma of molecular biology state? 
• Trace the steps of DNA translation. 
• Why do cells need to eat their dead counterparts? 
• How does protein biosynthesis work? 

♻️ Environmental Biology Topics to Research

Environmental biologists ensure our harmonic coexistence with nature. They are also in charge of monitoring wastewater disposal and pollution levels. This branch is closely related to ecology.

• Discuss the importance of light in different bodies of water. 
• Aftermath of building the Hetch Hetchy valley dam. 
• The devastating impact of deforestation in the Amazon. 
• Analyze the consequences of desertification. 
• How do genetically modified insects influence the environment? 
• What would happen if all the bees die? 
• Compare several methods of wastewater disposal. 
• What were the ecological effects of Indonesia’s Mega Rice Project? 
• The Great Pacific Garbage Patch: will we ever get rid of it? 
• How do worms indicate the state of an ecosystem? 
• Why is it important to conserve biodiversity? 
• DDT: how did it affect wildlife in the US? 
• What causes toxic algae bloom? 
• Compare the adverse health effects of common contaminants in the air. 
• The Aral Sea: how did it disappear? 
• How do genetically engineered crops impact the environment? 
• Indoor air pollution: causes and risks. 
• The pros and cons of using natural gas . 
• Trace the ecological footprint of cotton production. 
• What are the ways to ensure food security without harming the environment? 

🐬 Marine Biology Topics for a Paper

Fun fact: the vast majority of our oceans are still unobserved. Research in marine biology encompasses all organisms living close to or under water. Do you want to participate in uncovering the mysteries of the deep sea? This section is for you!

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• How does luminescence in marine vertebrae work? 
• Dolphins: how do they communicate? 
• The impact of military sonar on whales. 
• What makes the Galapagos Islands so unique? 
• Compare different camouflage techniques of marine animals. 
• How do aquatic organisms live together in coral reefs ? 
• Causes of high mercury concentrations in fish. 
• Investigate the impact of overfishing in China. 
• Explain how rising sea temperatures affect marine life. 
• Contrast the survival strategies of various penguin species. 
• The ethics of seafood farms. 
• Examine bacteria’s contribution to biological processes in the sea. 
• What are the types of invasive species? 
• The contribution of birds to a stable marine ecosystem. 
• Identify the biggest threats to marine biodiversity. 
• Inspect the predatory behavior of starfish. 
• How do corals form? 
• The importance of phyto- and zooplankton to ponds. 
• Whales: how did they evolve? 
• What are the four types of oceanography ? 

🌻 Plant Biology Research Topics

Plant biology, you guessed it, investigates plants. These green organisms are incredibly versatile. From redwood trees to algae, plants come in all sizes and shapes. Scientists use botanical knowledge to improve our food and medicine supplies. They also help to conserve forests, parks, and wilderness areas.

• What causes diseases in plants? 
• What are the benefits of studying algae ? 
• Recently, scientists engineered a plant to glow by itself. How does it work? 
• What makes some plants toxic? 

• Compare various defense mechanisms of flowers. 
• Deciduous trees: what are the advantages of leaf loss? 
• How do Butterworts acquire nutrition? 
• Carnivorous plants: methods of luring prey. 
• Types of negative feedback in plants. 
• Give examples of thigmotropism. How does it work? 
• What problems are associated with the definition of kingdoms? 
• Investigate the anatomical structure of plant roots. 
• Phytohormones: how do they influence plant growth? 
• Plants and music: does sound have any measurable effects on plant development? 
• How do plants produce starch? 
• Why do weeds grow excessively? 
• Investigate plant disease management and intervention. 
• Industrial applications of synthesized plant mechanisms. 
• Cacti: how do they survive in the desert? 
• Examine the biological properties of medicinal herbs. 

🧬 Hot Topics in Evolutionary Biology to Write About

Evolutionary biologists observe change in all living organisms. If you want to know why life on Earth is so versatile, evolutionary biology has the answer. Research areas cover ecology and genetics, as well as paleontology.

• How does stabilizing selection ensure the same phenotype for a species during evolution? 
• Discuss Tinbergen’s four questions. 
• What are the benefits of sexual reproduction ? 
• Cancer: why does it persist? 
• Society and evolution: are they connected? 
• Southeast Asia and the limited occurrence of the alcohol dehydrogenase gene. 
• Is there a scientific reason to divide humans into races? 
• Track the evolution of aging throughout human history. 
• How does speciation work? 
• Genetic drift and its effects on variation. 
• Describe problems concerning the Modern Synthesis. 
• Selective sweeps: how likely are they to cause disease? 
• What does the Red Queen hypothesis state? 
• How do you determine age in herbaceous plants? 
• Life history theory: how does a species’ life history influence its evolution? 
• What are the ways for a species to achieve its maximum fitness? 
• How did the bees learn to communicate information by dancing? 
• Investigate the evolution of stamina in animal locomotion. 
• How does an animal’s physiology adapt to its geographic range? 
• Compare the evolutionary process of endotherms and ectotherms. 

👶🧑 Developmental Biology Research Topics

When animals and plants grow, their features change. It’s no surprise: every living being starts as a single cell. It’s a long way from there to a fully formed organism! Developmental biologists track this process at different levels.

• Why are men more likely to be colorblind than women? 
• What is phylogenetic niche conservatism? 
• Identify origins of congenital disorders. 
• What causes birds to become territorial? 
• Explain the two types of developmental mechanisms. 
• Why does getting older make humans more susceptible to cancer? 
• Homeotic genes: how do they influence the development of body structures? 
• Describe the advantages of apoptosis . 
• What causes polycephaly? 
• How do stem cells differentiate? 
• Investigate regeneration in hydra. 
• Mechanisms of metamorphosis in frogs. 
• What happened during the Cambrian explosion? 
• How do plants produce new structures? 
• Examine the process of neurulation in fish. 
• What are the types of deformations found in plants? 
• Describe the ABC model of flower development. 
• Why are zebrafish good model systems for developmental studies? 
• Search for the origins of the vertebrate body plan. 
• What does the concept of morphogen gradient say about the fate of cells? 

😷 Epidemiology & Population Topics in Biology

Investigating health-related events is a part of epidemiologic research. The goal is to find out what causes diseases in a specific population. Epidemiology analyzes other health issues such as natural disasters and injuries. Population biology focuses on the interaction between populations and their environment.

• How does evolutionary game theory describe the development of a population? 
• When is a strategy evolutionarily stable? 
• How does phenotypic variety in plants help manage disease? 
• What diseases are caused by heavy metal pollution? 

• How did the Coronavirus pandemic contribute to a rise in cases of domestic violence ? 
• Reasons for an increased rate of congenital disabilities in a specific area. 
• Asian carp: a harmful disruption of the marine population in American rivers. 
• Compare the three kinds of population distribution. 
• Examine the consequences of the 1783 Laki eruption. 
• Examine various policies to moderate population growth . 
• How do predator-prey dynamics work? 
• Avoidance mechanisms of resource competition. 
• Describe the three types of symbiotic relationships . 
• How does a species regulate its abundance? 
• What happens if the equilibrium state of a community is disturbed? 
• Factors that encourage human population growth. 
• Contrast the survivorship curves of humans, birds, and trees. 
• Obesity : causes and solutions. 
• Depression : how does it affect society? 
• The role of causal inference in epidemiological studies . 

📜 History of Biology Topics to Write About

Even before the emergence of scientific studies, humans had basic biological understanding. They were able to spot edible plants and domesticate animals. Assyrians and Babylonians were the first to implement biological knowledge. If you’re looking for a theoretical research project, this is the right research area for you.

Get an originally-written paper according to your instructions!

• Explore the medical knowledge available in ancient China. 
• The history of agriculture in India. 
• How did the Greek philosophers theorize about the origin of life? 
• Investigate the theory of the four humors. 
• Aristotle’s classification of animals. 
• Give an overview of discoveries in Galen’s medical writings. 
• What caused the stagnation in scientific progress during the Middle Ages? 
• Al-Jahiz’ discovery of the relationships between organisms . 
• Albertus Magnus: what was his contribution to botany? 
• How did Italy become the center for biological studies? 
• What factors impacted the development of biology during the Renaissance? 
• Trace the origins of modern anatomy. 
• What led to the establishment of the cell theory? 
• Jump starting biological progress: the invention of the microscope. 
• Louis Pasteur and the dismissal of spontaneous generation. 
• How did the discovery of heredity influence modern biology? 
• What led to the discovery of blood circulation? 
• How did the Royal Society of London impact scientific development in Europe? 
• What technology helped advance biological research in the 20th century? 
• The rise of bioinformatics: boosting progress in genetic data analysis. 

We hope our article gave you some useful ideas for your biology paper. Good luck with your assignment!

You might also be interested in:

• A List of 212 Brilliant Research Proposal Topics to Investigate
• 220 Best Science and Technology Essay Topics to Write About
• 501 Research Questions & Titles about Science
• 300 Interesting Chemistry Topics & Writing Tips
• 150 Best Environmental Essay Topics & Questions
• 165 Health-Related Topics & Essay Ideas
• 281 Best Health & Medical Research Topics
• What is Biology?: NTNU
• High School Biology: Khan Academy
• Microbiology: University of Pittsburgh
• Human Biology: University at Albany
• Explore Topics Related to Cells: NIH
• What Is Marine Biology?: MarineBio Conservation Society
• Developmental Biology: Stanford Encyclopedia of Philosophy
• Introduction to Epidemiology: Centers for Disease Control & Prevention
• The History of Biology: Encyclopedia Britannica
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Extended Essay Topics: 50+ Examples for Subject in EE

by  Antony W

July 30, 2022

This is the complete list of Extended Essay topics on different EE subject areas. We’ve packed this guide with as many topic ideas as possible.

So if you’re just getting started with the IB extended essay assignment and you’re already stuck on topic selection, this post might help you to get unstuck.

What is an Extended Essay?

Abbreviated as EE, the Extended Essay is a required component of the IB Diploma Program for all students, regardless of the disciplines they are studying.

The objective of the Extended Essay is to offer students the chance to conduct research on a topic of their choice and demonstrate knowledge and reading beyond the classroom curriculum. The essay also provides students with the opportunity to develop abilities necessary for researching and writing in advanced learning institutions.

Students often begin working on their essay during the second term of their first year of the IB Diploma Program. They will require a manager (one of the teachers at their school) with whom they will meet on a regular basis to help them outline their research questions and lead them through the writing process.

The IB diploma program allows you to prepare and submit one draft to the supervisor for input, followed by a second, final draft. As for the length of the extended essay, you want to make sure the assignment doesn’t exceed 4,000 words .

Getting Extended Essay Help

Owing to the very nature of the IB program, searching for an extended essay topic and getting the task completed can be an involving task. If you feel like the whole process would end up rather overwhelming, you can take advantage of our extended essay writing service and we’ll help you get the task done. 

For just $19.09/page, you can get the professional writing help and advice required to score a 34 in your Extended Essay. The pricing is standard regardless of the topic you would like to work on.

Extended Essay Topics

If you’re confident that you can write an extended essay yourself, and you should, you need to start with selecting the right topic for the assignment. Here are some topic ideas to get you started: 

1. English Extended Essay Topics

The following are some of the best examples of topic ideas to consider if you choose to write an Extended Essay in the English subject.

• How the heroic couplets of the neoclassical period differed from those of the romantic period, and why classical poetry had so many rules.
• How many different styles of poetry can we observe from the English Renaissance through modernism and postmodernism?
• Does colonialism have an effect on modern poetry and the manner in which it evolves during the many eras of colonial rule?
• Why has euphemism been so prominent in the English language for so long and how does this affect the lexicon and structure of the language?
• Can we argue that, unlike other languages of the globe, English is a language of conventions and traditions with no hard and fast rules?
• What function does slang play in the English language, and how are slang terms now preserved in official and academic dictionaries?
• What are the primary causes of the gradual shift in the spelling of English words through time?
• Impact of globalization on the evolution of the English language as it becomes the universal language.

We encourage you to read more about English Extended Essay for further insights.

2. Biology Extended Essay Topics

• How do age and gender influence the photoreceptor cells in the human retina?
• What effects does climate change have on the appearance of coral reefs?
• An analysis of how antioxidants function in the human body?
• Which of hand sanitizer, hand soap, or antibacterial wipes inhibits the development of E. coli the most effectively?
• How does population density between X and X’s population size relate?
• What is the link between the growth hormone indoleacetic acid and the growth of X?

You can read more about Biology EE here.

3. Business Management Extended Essay Topics

We put together an in-depth guide on IB Business Management EE to give you more insight about the subject.

In addition to teaching you exactly how to write an EE in this subject, the post includes some interesting topic ideas as well as their respective research questions.

Remember to check it out to learn more.

4. Chemistry Extended Essay Topics

• What effect does acid rain have on the trees, plants, and public gardens in your neighborhood?
• Analyze the chemical composition of various types of lava and magma rocks from across the world.
• What kinds of chemical components are responsible for the majority of food allergies?
• Examine the chemistry of MDMA and other “nightclub” or designer drugs in users of various ages.
• Examine how chemical experiments and the knowledge gained from them have altered the globe.
• How has the usage of fluoride in the community’s water supply benefited and harmed the community?
• What chemical difference does choosing organic foods vs pesticide-treated foods have on our bodies?
• What impact have big cosmetics manufacturers made on our contemporary understanding of chemistry?
• What type of chemistry is involved in making generic medications cheaper than brand-name pharmaceuticals?

You can read more about Chemistry Extended Essay in this post.

5. Computer Science Extended Essay Topics

• In what way are support vector machines more accurate in predicting ATP tennis matches than artificial neural networks?
• To what extent are Java-generated pseudo-random numbers more predictable than C#-generated numbers?
• How much more effectively does MP3 encoding reduce quality loss and file size than OGG in terms of algorithmic efficiency and encoded file quality?
• How well does the binary search algorithm locate specific values among variable-sized data sets?
• How much more efficient is Depth First Search than Breadth First Search for path finding in artificial intelligence and robot motion planning?
• To what degree is hashing a more appropriate and efficient method than binary search for locating specific values in different-sized data sets?
• How do Password Length and Character Variation Influence the Entropy of a Password?
• How much more space-efficient is the AES symmetric encryption method compared to the Blowfish symmetric encryption technique when encrypting data of varied sizes and types?

6. Economics Extended Essay Topics

• What is the connection between unemployment and economic contraction?
• Is Alcohol Consumption Regulation Beneficial to the Stock Market?
• Trucking Companies and the Effects of Sanctions and Trade Embargoes
• Analysis of the Effects of Increasing Taxes on Multinational Corporations and Religious Organizations
• What Negative Effects Will a “Hard” Brexit Have on Scotland and Wales?
• How Will the Substitution of Fossil Fuels with Solar Power Affect the Economies of Middle Eastern Nations?
• In Sub-Saharan Africa, deforestation and man-made disasters are the leading causes of poverty.

We’ve written an in-depth guide on Economics Extended Essay, and we encourage you to check it out to learn more about the subject.

7. Environmental Systems and Societies EE Topics

The following are some interesting topics on the Environmental Systems and Societies. The X is a variable, which can be a name of any city or country you’d wish to investigate in your ESS.

• What forest and woodland restoration strategies exist in Siberia, Russia, and one is the most effective?
• How can human meddling in X city/country/continent produce ecological imbalances?
• What effect does urbanization have on the bee population in X city?
• What are the distinctions between Yosemite National Park (California, USA) and Lake District National Park (United Kingdom) in terms of dialogue efforts?
• How much have healthcare policies in nation X affected its human population curve?
• What impact has X’s landfill had on the surrounding terrestrial ecosystem?

You can read our ESS guide to learn more about this subject before you start working on your Extended Essay assignment.

8. Film Extended Essay Topics  

• Relationship between IMDB ratings and several national and international film honors
• The current transformation of masculinity as represented in Fight Club
• Varieties of timeline modification methods in cinematography
• Sci-fi film portrayals of scientists and the scientific method are grossly inaccurate.
• Moving camera – inventive approaches (such as those utilized in The Matrix or Guy Ritchie’s film)
• How can filmic approaches depict the evolution of Disney princesses from 1937 to 2012?
• How are transgender characters portrayed in two films from distinct periods?

9. Geography Extended Essay Topics

• What socioeconomic and urban design elements contribute to high vandalism rates in Eindhoven’s neighborhoods?
• How does the quality of life of Filipina Foreign Domestic Workers in Downtown Singapore compare to that of Filipinas in the Philippines?
• An inquiry examining whether Singapore qualifies as a sustainable city
• To what degree do migratory patterns and motivations in the northern area of Thailand correspond to predicted migration movements in an LDC?
• Comparative analysis of the provision of public services in Warsaw’s districts

Check out our complete guide on Geography EE to learn more about the subject. Make sure you check the assessment criteria part, so you can write the kind of an EE that earns you top grades – if not a 34.

10. Global Politics EE

• The legitimacy of the 2003 US-led invasion of Iraq; to what extent was the invasion justified? (2021)
• How media depictions and government information can diverge
• How the success of a political party in one nation may affect the results in another.
• Comparing the influence of global political trends on two countries reveals contrasting results.
• The effect of a single crisis on the political ties between two countries

We’ve put together a more comprehensive guide on Global Politics Extended Essay . So we encourage you to check that out to learn more.

11. History Extended Essay

• The consequences of dropping nuclear bombs on Hiroshima and Nagasaki
• You can investigate the economic, ethnic, social, and even environmental consequences of conflict diamonds.
• The evolution of military technology during the American Civil War
• The post-apartheid work of the Truth and Reconciliation Commission Southwest Africa
• The rise and collapse of the Ottoman Empire and its economic influence

You can get more topic ideas on this subject from this post .

12. Math Extended Essay

• How can mathematics be used to determine the ideal distance from the try line for positioning the ball for a rugby union conversion kick?
• In the sliding tile problem, what is the graph structure of m x n?
• How long does it take to travel around the whole Singapore MRT network? (2015)
• Modeling mathematics – An examination of the Richardson arms race model (2020)
• Real-world applications of a study of differential equations of the second order
• A mathematical examination of shock absorbers’ damped harmonic motion

Our IB Math EE guide has more insights worth checking out. So we recommend going through the guide before you start writing an extended essay on this subject.

13. Physics Extended Essay Ideas  

• How may the design of an airplane’s wings affect its aerodynamic performance?
• Why is it required for the wing of an aircraft to have an ‘angle of attack’? Is it impossible for the aircraft to behave the same without the angle of attack?
• If landing gears are a cause of drag during flight, how is a Cessna able to deliver a sufficient amount of force to overcome drag?

14. Psychology EE Ideas  

• What do we know about the connection between stress and bodily disease, and can we utilize this information to manage stress?
• To what degree can psychology offer plausible explanations for altruistic behavior?
• Which strategies are most effective in assisting autistic youngsters in improving their everyday functioning?
• The difficulty of identifying particular genetic variables that might indicate an autism risk
• How well biological (or sociocultural) variables explain the origin of homosexuality.
• To what degree does parental discipline affect the temperament of their children?
• Are Montessori schools, which utilize a humanistic approach to education, also consistent with cognitive theory?

We’ve put together a complete guide on Physics Extended Essay. So, check that out to learn more about the subject. 

15. Visual Arts

• What role did national themes have in the creative activity of Russian avant-garde artists associated with the Knave of Diamonds society?
• How did men and women’s clothes communicate National Socialist ideals?
• How does Yinka Shonibare’s work represent the evolving importance of African art in a global society?
• What are the origins of Romanesque architecture in Arles?
• Are there pop art elements in the design of Pakistani trucks?

Check out this post to learn more about the topic. 

About the author 

Antony W is a professional writer and coach at Help for Assessment. He spends countless hours every day researching and writing great content filled with expert advice on how to write engaging essays, research papers, and assignments.

Example essays

The International Baccalaureate® (IB)  programme resource centre,  a key resource for educators at IB World Schools, includes several examples of  extended essay titles .

These highlight the diverse range of topics covered by International Baccalaureate® (IB) Diploma Programme (DP) students during their extended essays.

Some examples are:

• “An analysis of costume as a source for understanding the inner life of the character”
• “A study of malnourished children in Indonesia and the extent of their recovery after a period of supervised improved nutrition.”
• “Doing  versus  being: language and reality in the Mimamsa school of Indian philosophy.” 
• “The effects of sugar-free chewing gum on the pH of saliva in the mouth after a meal.”
• “To what extent has the fall in the exchange rate of the US dollar affected the tourist industry in Carmel, California?”
•  “What level of data compression in music files is acceptable to the human ear?”

Also available in the programma resource centre , the Diploma Programme Assessment Procedures has guidance on choosing a subject for the extended essay.

The PRC is only available to existing IB World Schools.

You can also purchase examples of essays in the IB Store . These essays fulfil the requirements for an ‘A’ grade in the extended essay.

If your school is not one already, learn how to become an IB World School  in order to implement the DP.

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Extended Essay (IB): Choosing a subject and topic

• The Inquiry Process
• EE Seminar 1
• EE Seminar 2
• IT Workshop 1
• EE Investigation Days
• EE Writing Days
• Choosing a subject and topic
• Developing a line of inquiry
• Finding and selecting sources
• Working with ideas
• Expressing your ideas
• Using ManageBac
• Supervisor resources
• Who can help?

For your EE you have the freedom to focus on almost any topic and you will write your own question to answer.  However, your topic must fit into a single DP subject (unless you choose to write an interdisciplinary essay, such as a World Studies EE that covers a topic “of contemporary global significance” and is likely to encompass two subject areas).

Given the academic challenge and level expected of an EE, you are strongly advised to choose a subject that you are currently studying, preferably at Higher Level.

Introduction to the Extended Essay

What is the Extended Essay?

• Compulsory element of the core, along with TOK and CAS
• Inquiry-based research project resulting in an essay of up to 4,000 words
• Topic of your choice, but must be based in a DP subject * and meet subject-specific requirements
• You are strongly encouraged to do your essay in one of your HL subjects

*It is possible, under certain circumstances, to combine two subjects and do a World Studies essay but we do not currently recommend this.

What do I need to do?

This guide is just to get your thinking started.

You are going to be spending nine months on your Extended Essay - it is very important to choose a topic that actually interests you, or it is going to be a very long nine months...

Good preparation is much more effective for finding inspiration than last minute panic!

CALVIN AND HOBBES © Watterson. Reprinted with permission of ANDREWS MCMEEL SYNDICATION.  All rights reserved.

How do I choose a subject?

• Think about your interests outside the classroom then check whether they might fit into any IB subject areas.
• Think about your IB subjects, particularly your HL subjects. Which would (and wouldn't) you enjoy exploring in more depth?
• Make a list of the topics (for one or more different subject areas) that you have enjoyed in that subject area and a list of topics you haven’t covered but wish you had. You might want to chat to your teachers or have a look in your textbooks.
• Think about any career aspirations you might have, or any ideas for further study, and they could point you in a direction.

Now have a look at the Subject Group Overviews , below, to see what an EE in that group might involve. It is worth comparing a couple of different subject groups.

Subject Group Overviews

• Group 1: Studies in language and literature
• Group 2: Language acquisition (incl. Classical Languages)
• Group 3: Individuals and societies
• Group 4: Experimental sciences
• Group 5: Mathematics
• Group 6: The Arts
• Interdisciplinary essays

• Category 1 Studies of one or more literary works originally written in the language in which the essay is presented.
• Category 2 Studies of a literary work or works originally written in the language of the essay compared with one or more literary works originally written in another language. (The work originally written in another language may be studied in translation.)
• Category 3 Studies in language based on one or more texts originally produced in the language in which the essay is presented.

Students and teachers must indicate at the point of upload which category of essay they are submitting."

From: IBO (2020) Extended Essay: Studies in language and literature

Students working on a language acquisition EE must demonstrate an in-depth understanding of the language, culture and society or literature studied. This understanding must be shown in the form of:

• an analysis of a cultural context or a specific text OR
• an analysis of trends in the culture studied and the impact of a cultural change on the form or use of the language OR
• an analysis and comparison of literary texts.

For those undertaking a classical Greek or Latin EE, the focus is on demonstrating an understanding of a relevant or significant aspect of the language, literature and civilization of ancient Greece or Rome."

From: IBO (2020) Extended Essay: Language acquisition including classical languages

Note that you may not do your EE in a language you are studying at ab initio level .

The individuals and societies EE is intended to encourage the systematic and critical study of:

• human experience and behaviour
• physical, economic and social environments
• the history and development of social and cultural institutions.

Students’ choice of topic should enable them to recognize that the content and methodologies of the subjects are contestable and that their study requires critical thinking.

Students must have sufficient grounding in the subject under which they submit their essay: reading a textbook or consulting an encyclopedia while writing the EE will not compensate for a lack of proper background knowledge."

From: IBO (2020) Extended Essay: Individuals and societies

Note: The IB considers Environmental Systems and Societies EEs to be interdisciplinary, so materials for these can be found under the Interdisciplinary essays tab, above.

"An extended essay (EE) in the sciences gives students an opportunity to apply a range of skills while researching a topic of personal interest in the field. Students working on a science EE must demonstrate an in-depth analysis of the subject matter studied, be it biology, chemistry, computer science, design technology, physics or sports, exercise and health science. This understanding must be shown in the form of a research paper involving a wellformulated research question. Students should be advised that while there is overlap between the subjects, their study should reflect one specific science area. For example:

• biology—dealing with living organisms and life processes
• chemistry—dealing with the composition, characterization and transformation of substances

...The nature of the topic under investigation should be different for each subject area and students should be careful if they undertake essays that may blur the boundaries between two science subjects. For example, when studying the pH of a body of water, students may investigate the chemicals responsible for the observed pH (chemistry), or the effect of the pH on the biota (biology)."

From: IBO (2020) The Sciences: an introduction from Extended Essay: The sciences

• the applicability of mathematics to solve both real and abstract problems
• the beauty of mathematics, as in, for instance, geometry or fractal theory
• the elegance of mathematics in the proving of theorems as in, for example, number theory
• the origin and subsequent development of a branch of mathematics over a period of time, measured in tens, hundreds or thousands of years
• the links between different branches of mathematics, or the way that branch of mathematics has been born, or has flourished, as a result of technology.

Students should be advised on the importance of formulating logical and coherent reasons for selecting a particular topic for the EE, the need to identify a well-thought-out research question and the requirement to search for the mathematical problems that require a solution. Students must be advised that mathematical research is a long-term and open-ended exploration of a set of related mathematical problems that are based on personal observations. The answers to these problems connect to and build upon each other over time."

From: IBO (2020) Extended Essay: Mathematics

• a coherent analysis and interpretation of their chosen area in relation to a posed research question
• the testing and validation of the research and consideration of its effect on the practice of the investigated area of the arts
• development and exploration in a disciplined and imaginative way of an area of study specifically appropriate to the curriculum area chosen
• a link to a practical dimension.

Each subject area poses its own unique set of challenges. Therefore, the approach to the topic of investigation should reflect the particular methodology most appropriate to the arts subject being studied. Students should have logical and coherent reasons for selecting a particular topic for their essay, a well-thought out research question and an approach that allows them to develop a reasoned argument.

...While there may be overlap between the subjects in the arts and common approaches, the research topic must clearly relate to one specific arts area. If a student chooses a research area that blurs the boundaries between two arts subjects, they must ensure that their essay’s emphasis clearly lies within the arts subject for which they are submitting it. Crucially, the topic selected should reflect each student’s particular interest and enthusiasm within that subject area."

From: IBO (2020) Extended Essay: The arts

For example, in literature and performance, students focus on the nature of the relationships that occur between a chosen text and its adaptation for performance; in world studies an issue of contemporary global significance is explored through the lenses of two subjects ; and in environmental systems and societies the interaction and integration of natural environmental systems and human societies are explored

Students undertaking one of these options must demonstrate a solid understanding of their area of research, taking a fully integrated approach. This examination must be shown in the form of:

• a coherently written and structured essay that effectively addresses an area of research, taking an interdisciplinary approach
• bringing together concepts, methods and approaches from across different subjects
• the development and exploration of an area of study specifically appropriate to the interdisciplinary choice

The most critical stage in preparing for the EE is the formulation of a logical and coherent rationale for selecting a particular topic for the extended essay, a topic that offers enough scope to provide material for a substantial essay , and the development of ideas around the topic and research question that examine existing views and argue against them."

From: IBO (2020) Interdisciplinary essays: an introduction from Extended Essay: Interdisciplinary essays

We do not recommend undertaking an EE in World Studies. If you choose to do so anyway, make sure that you consider very carefully whether your topic would fit the requirements of a single subject discipline instead. It can be challenging to juggle the requirements of two different subjects while undertaking a piece of academic research like this for the first time, particularly if you do not currently study one or both of the subjects.

Note that the Treatment of the Topic section of the Subject Guide for World Studies says that:

"It is expected that students will have a good grounding in at least one of the Diploma Programme subjects used in the EE.

If they are unfamiliar with a discipline used, they must access its syllabus so that they can identify the concepts, terminology and modes of thinking required for their EE. (Many IB syllabuses contain lists of key concepts.)"

This means that whether or not you are currently studying either or both of the subject areas your World Studies EE is based in  you will need to use DP Level concepts, terminology and modes of thinking appropriate to both subject areas.

Subject Specific Guidance

Use the links below to explore the Subject-Specific Guidance for your chosen subject. Note that it is very important to use the side navigation menu to make sure you have read ALL the relevant guidance (see example for Biology, below).

You MUST read the subject-specific guidance before completing your Supervisor Application Form, and reread it before completing your Research Proposal Log. You might find it helpful to take notes using the Using the Subject-Specific Guidelines table.

Electronic versions of these can be found at the top right hand side of this page (follow links). If you wish to submit your handwritten version to ManageBac, you may upload a (legible!) photograph.

Ethical guidelines

You must address the IB ethical guidelines in your Research Proposal and follow them throughout the EE process. Some Subject Guides will contain specific ethical guidelines for that subject, but here are some general guides you might need to refer to:

Extended essays from previous years

Past essays

It can be really useful at this stage to look at essays from previous Oakham students, to see what kinds of topics they investigated and what their final essays looked like. These are upstairs in the library and can be looked at while you are here.

Please remember:

• These are all the essays from past Oakhamians and they were awarded a range of grades (which are recorded on the contents pages). They are not a set of examples of 'good' essays or even 'good' titles.
• There have been several rule changes in the past, most notably in 2018, so make sure you are aware of the current rules.

You may take photographs of individual pages (such as the contents pages). You may not photograph or photocopy whole essays.

How do I choose a topic?

Go back to your brainstormed list of topics from the first session:

• Eliminate any that you don’t really want to write about and focus on the rest.
• Use the ideas on the mind map below to examine these topics and decide which might be worth further exploration. You might choose to make a mind map like this for some of your topics.

Before deciding on a topic you should do some preliminary research to see what information is out there. Make a few brief notes as you go.

• General internet browsing: You could begin with some freestyle internet searching on a broad topic that interests you. Search for your topic online, give yourself an hour to follow links and see where they take you – keeping an EE focus, of course!
• Subscription Databases : While you will almost certainly search the databases extensively for your research once you have chosen a topic, you can also browse them to help you to chose one. See the ' Browsing our subscription databases ' box below for advice on the best ones to choose for this. Using the subscription databases to help you to choose a topic also means that you are guaranteed to be able to find high quality information on that topic.
• Talk to your teachers, friends and family

Put your notes away, forget about what you have read for a few days, then see what you remember.  This time and distance is important as it is likely that you will remember what is of most interest to you, and so the angle you should develop.

Aim to have three suggestions for topic areas you might like to explore for your EE to explore further before making a decision .

Browsing our subscription databases

You are likely to have used our databases in the past to search for information on specific topics, but many of them are also excellent when browsing for ideas. I have made some suggestions below. You will need to access them from the list on our Subscription Databases page (using the log in information given if you are not on the school network).

An excellent series of ebooks providing a short, academic introduction to a wide range of topics. Choose 'Browse by subject' from the menu bar to explore them (or use the excellent search facility if you know which topic you are interested in).

An online encyclopaedia that you can trust and cite! Choose 'Advanced' then 'Explore: Articles' to browse Britannica in a range of different subject areas.

Hodder Education Magazines

Although aimed at A-level students, browsing these Review magazines may be a good way to identify a broad topic of interest. After you log-in, you can choose to search the whole database or choose a specific subject and browse/search within it.

Other, subject-specific resources

• Art: Oxford Art
• Drama: Drama Online
• Economics: Financial Times and Gale Newspaper Collection
• English literature: Connell Guides, EBSCO Literary Reference Centre, emagazine and MASSOLIT (a video-based resource)
• Music: Naxos Music Library, Oxford Music
• Politics: Financial Times and Gale Newspaper Collection 

Using the Subject Specific Guidelines

This table will help you work with the Subject-Specific Guidelines as you choose your topic. You are not required to submit this form to your supervisor, but you might find it helpful when filling in your Supervisor Application Form and Research Proposal.

AI Prompt Catcher

• AI Prompt Catcher Example

This Prompt Catcher  must  be completed if you are using AI tools as part of your initial research.  Since examiners cannot access the exact AI-generated content subsequently, you must cite and reference the tool in your essay and include a copy of the Prompt Catcher containing the generated content and the prompt you used to generate it in an appendix.

Annotated bibliography

This resource will help you to keep track of all the different sources you find. Once you start working with each source in more detail, you will also need a tool like the Investigative Journal to organise your notes.

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A Collection Of Strong Biology Extended Essay Topics

Introduction.

When you’re tasked to write an extended essay about biology, it helps to write something that you are interested in and something that you enjoy since you’ll be spending a great amount of time working on it. You can start by sorting out what branch of biology you like best or you’re passionate about. This way, your burden in writing may somehow be reduced in the process.

If you are having a hard time getting started in your writing work, you can refer to the following topic ideas about IB Biology extended essay:

• Can photosynthesis process without sunlight?
• Discuss about the safety standards of storing cow milk
• What are the effects of changes in change of habitats?
• Can plants act distinctly with others that have identical habitats with them?
• Does pollination take place in profound areas?
• Discuss the distinction between aquatic and land plants
• How do plants act as healers or how can they provide therapeutic effects?
• Do pain killers impair the human brain?
• How are flowers produced?
• Does banana peel have effect on seed germination?

What should you keep in mind when writing biology extended essay topics?

It is critical to concentrate on the reasoning of being asked to accomplish this form of paper. Fundamentally, it is advised to explore, examine and prove a theory in biology. What is more, it makes sense to thoroughly go over the guidelines and instructions that you have been provided. Note that this is actually pivotal since it would be devastating for you if you are already in the middle of writing only to uncover that you’re not on the right roadmap. Make sure that you keep the guidelines by your side all through the process so that you won’t need to refer to them every step of the way.

It is indeed true that finding strong biology extended written discourse topic is challenging. The good news is that there are several tips and tricks on how to come up with a good one that you can consider as your own title for your writing assignment. Depict a strong topic for your biology extended essay. Bear in mind that a strong topic shall have some great background research which you can use to your advantage and it shall not be on the unapproved list in the guidelines. Note that this might not be the most helpful piece of data but it will considerably aid you in terms of concentrating on what is not a great topic to delve into.

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IB Extended Essay (EE)

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• Environmental Systems & Societies (ESS)
• Human Rights
• Information Technology in a Global Society (ITGS)
• Mathematics
• Peace and Conflict Studies
• Social and Cultural Anthropology
• Visual Arts
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• World Studies

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Excellent extended essays - biology, find example excellent essays, click on the subjects to browse the list of excellent extended essays..

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World Studies Extended Essay: Global Themes

• Introduction
• Getting Started
• Global Themes
• Interdisciplinary Research
• What Makes Up a "Discipline"?
• Evaluating the Insights of Academic Disciplines
• Multiple Forms of Integration
• Evaluating Your Essay
• Common Stumbling Blocks
• Examples of Globally Conscious Students

World Studies Global Themes

Conflict, peace, and security Culture, language, and identity Environmental and/or economic sustainability Equality and inequality Health and development Science, technology and society

Conflict, peace, and security

Culture, language, and identity, environmental and/or economic sustainability, equality and inequality, health and development, science, technology and society, wsee documents.

WSEE Subject Guide and worksheets

• IB EE Subject Guide - World Studies, 2018
• Making Meaningful Connections Use this worksheet to help you think about your research plans: the concepts or methods your will be using, the global topic you're focusing on, and the academic disciplines you will be using.

RRS (Researcher's Reflection Space)

• Sample Prompts for the WSEE RRS What should you write in your RRS? Use these questions and prompts to help you think through the various stages of the research for your WSEE: your initial ideas, your thoughts and reflections during the process, and your conclusions.
• RRS Example B - World Studies

RPPF (Researcher's Planning and Progress Form) examples:

• RPPF Example 5 - World Studies
• RPPF Example 7 - World Studies

IB Extended Essay Guide & Timeline

Check the Extended Essay guide for specific guidance on completing the various steps in the research and writing process of the EE, and  these documents:

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