112. Which of the following are products of the light reactions of photosynthesi
ID: 73953 • Letter: 1
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112. Which of the following are products of the light reactions of photosynthesis that are utilized in the Calvin cycle? A. CO2 and glucose B. H20 and O2 C. ATP and NADPH D. electrons and H+ E. ADP, Pi, and NADP 113. A flask containing photosynthetic green algae and a control flask containing water with no algae are both placed under a bank of lights, which are set to cycle between 12 hours of light and 12 hours of dark. The dissolved oxygen concentrations in both flasks are monitored. Predict what the relative dissolved oxygen concentrations will be in the flask with algae compared to the control flask comparing the beginning and the end of the light/dark period. A. The dissolved oxygen in the flask with algae will always be higher B. The dissolved oxygen in the flask with algae will always be lower C. The dissolved oxygen in the flask with algae will not be different from the control flask at any time D The dissolved oxygen in the flask with algae will be higher after the light period, but lower after a dark period E. The dissolved oxygen in the flask with algae will be higher after a light period, but the same after a dark period 114. In bright light, the pH of the thylakoid space A. becomes more alkaline B. becomes more acidic C. stays the same D. becomes neutral E. None of the above 115. Photosynthesis and respiration have the following in common A. In eukaryotes, both processes reside in specialized organelles B. ATP synthesis in both processes relies on the chemiosmotic mechanism C. Both use electron transport D. Both require light E. A, B and C 116. How many moles of CO2 must enter the Calvin-Benson cycle for the synthesis of one mole of glucose? A. 1 B. 2 C. 3 D. 6 E. 12 117. Which metabolic pathway is common to both cellular respiration and fermentation? A B. C. D. glycolysis the citric acid cycle oxidative phosphorylation the oxidation of pyruvate to acetyl CoA 118. A young poodle has never had much energy. He is brought to a veterinarian for help and is sent to the animal hospital for some tests. There they discover his mitochondria can use only fatty acids and amino acids for respiration, and his cells produce more lactate than normal. Of the following, which is the best explanation of his condition? A His cells cannot move NADH from glycolysis into the mitochondria B. His mitochondria lack the transport protein that moves pyruvate across the outer mitochondrial membrane C. His cells contain something that inhibits oxygen use in his mitochondria D. His cells lack the enzyme in glycolysis that forms pyruvate E. His cells have a defective electron transport chain, so glucose goes to lactate instead of to acetyl CoA Page 16 of 22Explanation / Answer
112. C. ATP and NADPH
113. D. The dissolved oxygen in the flask with algae will be higher after the light period, but lower after a dark period.
114. B. becomes more acidic
115. E. A, B and C
116. D. 6
117. A. glycolysis
118. The correct option is D.
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