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March test

March test - Review Mar 10 Biology 1223 Page 1 of 8 1...

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Review Mar ‘10 Biology 1223 Page 1 of 8 Student Number ____________________ Code 111 Code 111 Code 111 1. Cholesterol functions in cell membranes to A. store cellular energy. B. increase the rate of diffusion. C. maintain membrane fluidity. D. transfer electrons in a redox reaction. E. facilitate diffusion. 2. All of the following processes can take material into cells except A. phagocytosis. B. pinocytosis. C. osmosis. D. exocytosis. E. endocytosis. Use the following graph to answer Questions 3 and 4 . 3. Which of the following terms best describes this reaction? A. exergonic B. anabolic C. non-competitive D. endergonic E. allosteric 4. Which of the following represents the Δ G of this reaction? A. d B. a C. b D. e E. c 5. Correct statements regarding ATP include: I. ATP serves as the energy currency for the cell. II. ATP drives endergonic reactions in the cell by the enzymatic transfer of the phosphate group to specific reactants. III. The regeneration of ATP from ADP and phosphate is an endergonic reaction. A. I, II and III B. I only C. I and III only D. II only E. III only 6. Enzymes aid in metabolism by A. removing unused reactants from the system. B. increasing the rate of reaction. C. adding additional reactants to the system. D. changing the Δ G of the reaction. E. slowing the rate of reaction.
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Review Mar ‘10 Biology 1223 Page 2 of 8 Student Number ____________________ Code 111 Code 111 Code 111 7. The mechanism in which the end product of a metabolic pathway inhibits an earlier step in the pathway is known as A. allosteric inhibition. B. noncooperative inhibition. C. reversible inhibition. D. metabolic inhibition. E. feedback inhibition. 8. The figure below shows the absorption spectrum for chlorophyll and the action spectrum for photosynthesis. Why are they different? A. Other pigments absorb light in addition to chlorophyll. B. Aerobic bacteria take up oxygen which changes the measurement of the rate of photosynthesis. C. Bright sunlight destroys photosynthetic pigments. D. Green and yellow wavelengths inhibit the absorption of red and blue wavelengths. E. Oxygen given off during photosynthesis interferes with the absorption of light. 9. All of the following processes are associated with photosystem I except A. NADPH synthesis. B. ATP synthesis. C. accepting electrons flowing from an electron transport chain. D. splitting water. E. cyclic electron flow. 10. The following are all products of the light-independent reactions except for A. RuBP B. NADP + . C. G3P. D. ADP. E. O 2 gas. 11. Plants that fix CO 2 into organic acids at night when the stomata are open and carry out the Calvin cycle during the day when the stomata are closed are called A. C4 plants. B.
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