Podcast
Questions and Answers
Which of the following is NOT true of the Calvin cycle?
Which of the following is NOT true of the Calvin cycle?
Which of the following statements is NOT correct about ATP?
Which of the following statements is NOT correct about ATP?
Which of the following events does NOT occur during the light reactions of photosynthesis?
Which of the following events does NOT occur during the light reactions of photosynthesis?
During noncyclic photophosphorylation, water is oxidized and the electrons from water pass through photosystem II and photosystem I before reducing:
During noncyclic photophosphorylation, water is oxidized and the electrons from water pass through photosystem II and photosystem I before reducing:
Signup and view all the answers
Which of the following statements is NOT correct about the Calvin cycle?
Which of the following statements is NOT correct about the Calvin cycle?
Signup and view all the answers
With cyclic photophosphorylation:
With cyclic photophosphorylation:
Signup and view all the answers
When photosystem II loses electrons during the light reactions, it gains its lost electrons from:
When photosystem II loses electrons during the light reactions, it gains its lost electrons from:
Signup and view all the answers
CAM and C4 pathways occur at different times and locations. C3 and C4 pathways occur at different:
CAM and C4 pathways occur at different times and locations. C3 and C4 pathways occur at different:
Signup and view all the answers
The word 'photophosphorylation' implies:
The word 'photophosphorylation' implies:
Signup and view all the answers
If the sun suddenly stopped emitting 'green' wavelengths of light:
If the sun suddenly stopped emitting 'green' wavelengths of light:
Signup and view all the answers
On a dry day, lack of water can limit photosynthesis because:
On a dry day, lack of water can limit photosynthesis because:
Signup and view all the answers
As discovered by Calvin, when algal cells are exposed to radioactive carbon dioxide in the light for only 1 second, the compound that is most quickly and most extensively labeled with radioactive C has how many carbon atoms?
As discovered by Calvin, when algal cells are exposed to radioactive carbon dioxide in the light for only 1 second, the compound that is most quickly and most extensively labeled with radioactive C has how many carbon atoms?
Signup and view all the answers
Which statement about carbohydrate biosynthesis during the dark reactions of photosynthesis (i.e., the Calvin cycle reactions) is NOT TRUE?
Which statement about carbohydrate biosynthesis during the dark reactions of photosynthesis (i.e., the Calvin cycle reactions) is NOT TRUE?
Signup and view all the answers
Which of the following does NOT occur during the dark reaction of photosynthesis?
Which of the following does NOT occur during the dark reaction of photosynthesis?
Signup and view all the answers
What is a property of C4 plants, but not C3 plants?
What is a property of C4 plants, but not C3 plants?
Signup and view all the answers
Which statement about photosynthesis in C4 plants is NOT true?
Which statement about photosynthesis in C4 plants is NOT true?
Signup and view all the answers
Study Notes
Calvin Cycle
- CO₂ reacts with RuBP (ribulose bisphosphate) to form two molecules of PGA (phosphoglyceric acid).
- RuBP is regenerated.
- PGA is reduced using energy from ATP and NADPH.
### Light Reactions
- ATP is synthesized.
- Oxygen gas is produced.
- NADPH is synthesized.
Noncyclic Photophosphorylation
- Water is oxidized and the electrons from water pass through photosystem II and photosystem I before reducing NADP+ to NADPH.
ATP
- ATP is generated during:
- The light reactions of photosynthesis.
- Both aerobic and anaerobic cell respiration.
- ATP is hydrolyzed during glycolysis.
Calvin Cycle
- CO₂ is fixed by RuBP
- The reactions of the cycle occur in the stroma of mesophyll cells.
- Three carbon dioxide molecules are fixed in each turn of the cycle.
Cyclic Photophosphorylation
- ATP synthesis occurs by chemiosmosis.
Photosystem II
- Photosystem II gains its lost electrons from water.
C3 and C4 Pathways
- C3 and C4 pathways differ in their location within the leaf and the time of day they occur.
Photophosphorylation
- Light is involved and ADP is phosphorylated to make ATP(adenosine triphosphate).
### Accessory Pigments
- Accessory pigments are not directly involved in light absorption to form ATP.
Photosynthesis and Water
- Water must be split in the light reactions
- Stomata will close, preventing CO₂ uptake, limiting photosynthesis
- H⁺ ions are needed for ATP synthesis.
Calvin Cycle
- When algal cells are exposed to radioactive carbon dioxide in the light for only 1 second, the compound that is most quickly and most extensively labeled with radioactive C has three carbon atoms.
Dark Reactions
- The dark reactions occur in the stroma of chloroplasts.
Dark Reactions
- Oxygen is not required for the dark reactions.
C4 Plants
- C4 plants initially fix carbon dioxide in mesophyll cells as 4-carbon long compounds.
- C4 photosynthesis is an adaptation for plants living in hot, arid climates.
- Carbon dioxide is initially fixed in mesophyll cells, but the Calvin cycle is active bundle sheath cells in leaves of C4 plants.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Related Documents
Description
Test your knowledge on the intricate processes of photosynthesis, including the Calvin Cycle and light reactions. This quiz covers essential concepts like ATP synthesis, photophosphorylation, and the key differences between C3 and C4 pathways.
