Why is this green?
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Trimester 3 Photosynthesis
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Photosynthesis Topics:
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- You are responsible for the following photosynthesis topics in chapter 13 covered in your Biology book and in class notes. In addition, please refer to the Photosynthesis History Persuasion program available on classroom computers and available for downloading at the Mol. Bio. Download Center.
- Topics
- the structure of leaves and plant cells
- the details and the roles of:
- light dependent and light-independent reactions (light / dark reactions)
- sunlight as a source of energy
- photosystems in photosynthetic organisms
- photosynthetic pigments (chlorophylls, carotenoids, xanthophylls)
- electron transport and oxidative phosphorylation in photosynthetic organisms
- the Calvin cycle in photosynthetic organisms
- CFoCF1 complexes and the details of the chemiosmotic theory in photosynthesis
- the role of nucleotides in photosynthesis including:
- ATP/ADP, and
- NADPH/ NADP+
- synthesis of glucose in photosynthetic organisms
- oxygen, carbon dioxide and water in photosynthesis
- chloroplast structure including the specific locations of the biochemical pathways listed above
- the behavior of photosynthetic cells and organisms under experimental conditions (e.g. Action-spectra)
- C3 but not C4 plants
- history of the understanding of how photosynthesis works (See Persuasion Program downloadable here.)
PPAO
Questions For Your Consideration (QFYC)
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Assessments
in this section of the course consists
of a Take-home PPAO5A&B and an In-class all multiple choice PPAO6.
The PPAOs will be due or given on the dates listed on the Assignment Due Dates
page.
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PHOTOSYNTHESIS ASSESSMENTS |
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PPAO 5A/B: Essays |
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PPAO 6: Mul. Choice |
15% |
Take-home assessments require appropriate drawings. Make sure you indicate which Challenge Question you are answering at the top of your answer (letter and number.)
QFYC
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Take-home PPAO 5A&B (10% &
15%):
- Chloroplast structure
- Light-dependent reactions
- Chlorophylls and carotenoids
- Leaf & plant cell structure
- Light-independent reactions
- Action-spectra
- Photosystems
- Photophosphorylations
- Carbon fixation
- Chemiosmosis
- Calvin cycle
- C3 plants (ignore C4)
- Photorespiration
- Roles of the nucleotides (ATP and NADPH), and oxygen, carbon dioxide and water
- History of photosynthesis research (See Persuasion Program downloadable here.)
- This exam counts for 10% of your Mol. Bio. 3 final grade.
- Write complete answers with drawings to questions E2 and E4 (listed below). (Total: 2 questions)
- Make sure you clearly indicate which group and which question you are attempting to answer. Please write the question before you answer it.
- This exam counts for 15% of your Mol. Bio. 3 final
grade.
- Write complete answers with drawings to 1 question from each QFYC group D-F (listed below). (Total: 3 questions)
- Make sure you clearly indicate which group and which question you are attempting to answer. Please write the question before you answer it.
- Group D
- 1. What is the role of light in photosynthesis? How does it interact with photosystems and pigments?
- 2. What is the role of water in photosynthesis?
- 3. What are the roles of the following molecules in photosynthesis: NADP+/NADPH and electron acceptors?
- 4. Why are there so many different types of photopigments? Show the structure of at least three.
- Group E
- 1. Chloroplasts have many features that are similar to mitochondria. What are they?
- 2. What is a chloroplast? Draw a cross-section of a leaf containing chloroplasts, a mesophyll cell containing chloroplasts, and a chloroplast in detail and include the following:
- a) General structure with labels (including membranes, stroma, thylakoids, thylakoid lumen, grana, lipid droplets, starch granules)
- b) Locations of Calvin cycle, light-dependent and light- independent reactions, CFoCF1 complexes (include magnification drawings as needed)
- c) Location of DNA and ribosomes.
- 3. How does the Calvin cycle work? Where does it occur? (Include molecular drawings of major substrates but not ADP or NADPH)
- 4. Review the history of science research contributing to our current understanding of photosynthesis. (Refer to Persuasion program on Photosynthesis History.)
- Group F
- 1. Trace the life of a carbon dioxide molecule from source to use. (Assume different organisms & show how CO2 gets from each point to the next.) (Answer 1 or 2, not both.)
- 2. Trace the life of an oxygen molecule from source to use. (Assume different organisms & show how O2 gets from each point to the next.) (Answer 1 or 2, not both.)
- 3. How does the process of chemiosmosis contribute to photosynthesis?
- 4. What is the role of ATP in photosynthesis?
- Due: see Assignments Due Dates
- Evaluation:
- Partial credit will be awarded on the essays. Major concepts that you include in your answers should be accompanied by the appropriate diagrams of molecules.
- Answer 20 multiple choice questions. (They will NOT be provided before the exam!)
- Partial credit will be awarded.
- A six-point extra credit essay will be provided.
- Topics
- Chloroplast structure
- Light-dependent reactions
- Chlorophylls and carotenoids
- Leaf & plant cell structure
- Light-independent reactions
- Action-spectra
- Photosystems
- Photophosphorylations
- Carbon fixation
- Chemiosmosis
- Calvin cycle
- C3 (don't worry about C4 plants)
- Photorespiration
- Roles of the nucleotides (ATP and NADPH), and oxygen, carbon dioxide and water
- History of photosynthesis research (See Persuasion Program downloadable here.)
- Grading will be done at the end of the exam via computer entry.
- Date: see Assignments Due Dates
(Note: To print just the following Photosynthesis info, click here and print.)
| Photosynthesis
Topics
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| Format: PPAO 5A
Format: PPAO 5B QFYC for PPAOs 5A&B |
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