Photosynthesis and Respiration problems
- 1. Glycolysis takes places in the __________ and produces __________ , which in the presence of oxygen then enters the __________ .
Options- A. cytosol; glucose; mitochondrion to complete fermentation
- B. cytosol; pyruvate; mitochondrion to complete fermentation
- C. cytosol; pyruvate; mitochondrion to complete cellular respiration
- D. mitochondrion; pyruvate; chloroplast to complete photosynthesis Discuss
Correct Answer: cytosol; pyruvate; mitochondrion to complete cellular respiration
- 2. Which one of the following is a product of both cyclic and noncyclic photophosphorylation?
Options- A. NADPH
- B. O2
- C. ATP
- D. Carbohydrate Discuss
Correct Answer: ATP
- 3. NADP+ is reduced to NADPH during
Options- A. light dependent reactions
- B. photorespiration
- C. calvin cylcle
- D. none of these Discuss
Correct Answer: light dependent reactions
- 4. In noncyclic photophosphorylation, the ultimate acceptor of electrons that have been produced from the splitting of water is
Options- A. NADP+
- B. chlorophyll a
- C. carbon dioxide
- D. chlorophyll b Discuss
Correct Answer: carbon dioxide
- 5. Where do the protons come from that make up the proton gradient used in the light reactions of photosynthesis?
Options- A. Glucose
- B. ATP
- C. H2O
- D. NADPH Discuss
Correct Answer: H2O
- 6. The end products of noncyclic photophosphorylation are
Options- A. O2, ATP and NADPH
- B. carbon dioxide, PGAL (phosphoglyceraldehyde), and H2
- C. water, ADP and NADP+
- D. carbon dioxide, ATP and water Discuss
Correct Answer: O2, ATP and NADPH
- 7. The manufacture of ATP in both photosynthesis and respiration is made possible by
Options- A. the existence of a proton gradient across specific membranes
- B. the action of ATP synthase
- C. energy from the movement of electrons
- D. All of the above Discuss
Correct Answer: All of the above
- 8. What process in cellular respiration is essentially the reverse of carbon fixation in photosynthesis?
Options- A. Glycolysis
- B. Citric acid cycle
- C. Oxidative phosphorylation
- D. Alcohol fermentation Discuss
Correct Answer: Citric acid cycle
- 9. In oxygenic photosynthesis, water is split in order to provide the
Options- A. electrons needed to reduce P680
- B. O2 needed for the dark reactions
- C. electrons needed to reduce NADH
- D. electrons needed for cyclic photophosphorylation Discuss
Correct Answer: electrons needed to reduce P680
- 10. In cells having organelles, the steps of the Krebs cycle and the electron transport system occur in the
Options- A. cell membrane
- B. mitochondria
- C. endoplasmic reticulum
- D. none of these Discuss
Correct Answer: mitochondria
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