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Killing Chloroplasts
Herbicides Targeting Photosynthesis
By Angela K. Hartsock
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This case study takes place at a fictional biotechnology company developing herbicides against invasive plant species. The case study focuses on five herbicides with different effects on photosynthesis. Students play the role of lab interns and explore photosynthesis and the herbicide effects by engaging in concept mapping, experimental design, data manipulation, and data analysis. The goal is to use the experimental data to predict the steps in photosynthesis that are inhibited by each herbicide. Students should come away from the case study with a process-based understanding of photosynthesis. This case study is designed for the "flipped" classroom with suggested preparatory videos and associated assessment questions included. Videos can be supplemented with textbook readings or mini-lectures. This activity was developed for a non-majors introductory biology course but it could also be used in any general biology course, including majors' courses. It might also be used to establish foundational knowledge for more advanced discussions of photosynthesis in plant biology (botany) courses.
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Date Posted
- Develop a hypothesis based on observations.
- Diagram the process of photosynthesis.
- Analyze the interactions between the different processes happening during photosynthesis.
- Apply understanding of photosynthesis to experimental data analysis.
photosynthesis; chloroplasts; plants; herbicides; atrazine; chloroplast; corn resistance;
Subject Headings
EDUCATIONAL LEVEL
High school, Undergraduate lower division, Undergraduate upper division
TOPICAL AREAS
TYPE/METHODS
Teaching Notes & Answer Key
Teaching notes.
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Materials & Media
Supplemental materials.
- The Simple Story of Photosynthesis and Food This video explores the relationship between photosynthesis and carbohydrates, starch, and fiber; and how the air we breathe is related to the food we ingest. The video provides a general overview and context for a more detailed discussion of the process in the next video. Running time: 4:00 min. Lesson by Amanda Ooten, animation by Bouncepad Collective, 2013.
- Photosynthesis In this video Paul Andersen reviews photosynthesis including the structure of choloroplasts, the major pigments involved, the light reaction, the Calvin cycle, and strategies for avoiding the problem of photorespiration that evolved in CAM and C4 plants. Running time: 12:26 min. Bozeman Science, 2012.
- How Atrazine Kills Plants This video links the action of the herbicide atrazine to the inhibition of photosynthesis. This video also prepares students to consider how the actions of herbicides influence each of the major components in photosynthesis. Running time: 4:49 min. Created by Angela Hartsock for the National Center for Case Study Teaching in Science, 2016.
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IMAGES
VIDEO
COMMENTS
Part II - #3: Here productio of herbici herbicide additiona someone explaining Herbicide H‐1 Herbicide H‐3 Herbicide H‐5 ts for "Killing Planting are five table n (nmol/g) in de (After). An (H‐1) is done l bars for you should be ab it to them. Experimenta Replicate 1 Replicate 2 Replicate 3 Average Experimenta Replicate 1
Effects of Calvin Cycle stopping. G3P production would decrease. order of light dependent reaction. chlorophyll absorption, oxygen production, NADPH production, ATP synthase activity, G3P production. PAP TAG // Giannou-Moore Learn with flashcards, games, and more — for free.
S ee if you. can do the rest of the components on your o wn. herbicide should prevent plant gro wth and sur vival. What if the herbicide prev ented plant growth b y inhibiting. usage guidelines. ccbysa. Document continues below. Principles of Biology IIBIO 104. Lurleen B. Wallace Community College.
Worksheets for "Killing Chloroplasts" by Angela K. Hartsock NATIONAL CENTER FOR CASE STUDY TEACHING IN SCIENCE Data Set 3. Oxygen pproduction inn isolated chhloroplasts. OOxygen prodduction wass measured oover time. At 2 minutes, hherbicide waas added to eeach samplee except the control. Data Set 4.
#3: Here are five tables, one for each of the five herbicides being tested, showing data on NADPH production (nmol/g) in chloroplasts in the absence of herbicide (Before) and 10 minutes after addition of herbicide (After). Analyze the data (calculate the missing averages) and then draw a graph to represent the findings.The first herbicide (H ‐ 1) is done for you and there is a graph started.
This case study takes place at a fictional biotechnology company developing herbicides against invasive plant species. The case study focuses on five herbicides with different effects on photosynthesis. Students play the role of lab interns and explore photosynthesis and the herbicide effects by engaging in concept mapping, experimental design ...
binds to protein causing it to strip electrons from water and generate superoxide radicals. H3. inactivates enzyme that produces G3P preventing sugars from being built. H4. takes electrons from etc. H1. Study with Quizlet and memorize flashcards containing terms like steps of photosynthesis effected by H-1, steps of photosynthesis effected by H ...
Biology document from West Windsor Plainsboro High School South, 3 pages, Part | — llluminating Photosynthesis #1: Fill in this concept map depicting the major steps in photosynthesis in the chloroplast: . i H0 . . . . . . . D) o 202 : absorpton of Photosystem 2 l'ght El e ":nc;z:' chain containing Chlorophyll fl absorption of |
View Case Study #3 - Killing Chloroplasts Worksheet ONLINE-2.docx from BIO 103 at Lincoln University. Name _ BIO 103 Case Study #3 - Killing Chloroplasts Worksheet Part I - Illuminating
Kami Export - Maxwell Modeste - Photosynthesis Case Study- Killing Chloroplasts - Free download as PDF File (.pdf), Text File (.txt) or read online for free. Scribd is the world's largest social reading and publishing site.
Question: Part 3. Dluging into the data like a pro You have collected data from several different experiments your TA will give your group a separate sheet with the data). Work with your group to figure out if any of the steps in photosynthesis are messed up by each herbicide. If so, try to figure out which step is being targeted by each herbicide.
Red lines represent chloroplasts treated with herbicide. Each panel is labeled with the herbicide tested (H‐1 through H‐5). Data Set 2. Glyceraldehyde 3‐phosphate (G3P) levels in chloroplasts before and after herbicide treatment. Values are reported in μmol/mg. Herbicide.
View Case_Study_-_Killing_Chloroplast.pdf from SCIENCE 12 at Parkville High & Center For Math/science. NATIONAL CENTER FOR CASE STUDY TEACHING IN SCIENCE Killing Chloroplasts: Herbicides Targeting ... PS case study worksheet answers.pdf. Solutions Available. Pennsylvania State University. BIOLOGY 240W. ... See #3 in your worksheets! Part III ...
BIOLOGY WITH MRS. Milani - Home
Killing Chloroplasts. 13 terms. campbelljsharpe. Preview. The Crusades Word Search Terms 2024. Teacher 15 terms. ayanna_yarborough. Preview. ... Biology- Chapter 8 Test. 40 terms. kenzie_nino. Preview. AP Bio Case Study Quiz. 10 terms. enunan. Preview. bio lab quizzes chapter 8. 32 terms. kayleegracem. Preview. Biology - Unit 3 QUIZ on cells ...
NAME: Worksheets for "Killing Chloroplasts" by Angela K. Hartsock NATIONAL CENTER FOR CASE STUDY TEACHING IN SCIENCE Part II - Planting Yourself as a Great Intern #3: Here are five tables, one for each of the five herbicides being tested, showing data on NADPH production (nmol/g) in chloroplasts in the absence of herbicide (Before) and 10 ...
NATIONAL CENTER FOR CASE STUDY TEACHING IN SCIENCE by Angela K. Hartsock Department of Biology University of Akron Wayne College, Orrville, OH Killing Chloroplasts: Herbicides Targeting Photosynthesis Part I - Illuminating Photosynthesis Welcome to our plant sciences department here at TransBio! It's great to have you as an intern. I'm the lead scientist of a team developing new ...
Part 3. Digging into the data like a pro You have collected data from several different experiments (your TA will give your group a separate sheet with the data). Work with your group to figure out if any of the steps in photosynthesis are messed up by each herbicide. If so, try to figure out which step is being targeted by each herbicide. 1.
View Ex. 8a_ Case Study Killing Chloroplasts.docx from BIO 1801 at Appalachian State University. Part I - Illuminating Photosynthesis #1: In the table below, place the letter of the term from the
Biology. Biology questions and answers. #4: Here is a table to help you organize your results. For each variable you can note if there is an increase, a decrease, or if it stays the same or is normal Herbicide Chlorophyll H-1 Absorption Stays the same stays the same Decrease Oxygen Production NADPH Production ATP Synthase G3P Production ...