Ch7 MCAT

Ch7 MCAT - Ch 7 Multiple Choice 1. ATP is a. a short-term...

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Ch 7 Multiple Choice 1. ATP is a. a short-term energy-storage compound. b. the cell’s principle compound for energy transfers. c. synthesized within mitochondria. d. the molecule all living cells rely on to do work. e. All of the above Answer: e 4. The end product of glycolysis is a. pyruvate. b. the starting point for the citric acid cycle. c. the starting point for the fermentation pathway. d. Both a and b e. a, b, and c Answer: e 16. The oxidation of pyruvate to carbon dioxide is called a. fermentation. b. the citric acid cycle. c. glycolysis. d. oxidative phosphorylation. e. the respiratory chain. Answer: b 29. In alcoholic fermentation, NAD + is produced during the a. oxidation of pyruvate to acetyl CoA. b. reduction of pyruvate to lactic acid. c. reduction of acetaldehyde to ethanol. d. hydrolysis of ATP to ADP. e. oxidation of glucose. Answer: c 34. When the supply of acetyl CoA being produced exceeds the demands of the citric acid cycle, some of the acetyl CoA is diverted to the synthesis of a. pyruvate. b. NAD. c. proteins. d. fatty acids. e. lactic acid. Answer: d
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35. In the cell, the site of oxygen utilization is the a. nucleus. b. chloroplast. c. endoplasmic reticulum. d. mitochondrion. e. cytosol. Answer: d 36. Before starch can be used for respiratory ATP production, it must be hydrolyzed to a. pyruvate. b. fatty acids. c. amino acids. d. glucose. e. oxaloacetate. Answer: d 37. When yeast cells are switched from aerobic to anaerobic growth conditions, the rate of glycolysis increases. The rate of glycolysis is regulated by the concentration of _______ in the cells. a. ATP b. acetyl CoA c. oxaloacetate d. FAD e. protein Answer: a 39 In yeast, if the citric acid cycle is shut down because of a lack of oxygen, glycolysis will probably a. shut down. b. increase. c. produce more ATP per mole of glucose. d. produce more NADH per mole of glucose. e. produce acetyl CoA for fatty acid synthesis. Answer: b 41. The end result of glycolysis is the a. creation of 38 molecules of ATP. b. reduction of 8 molecules of NAD. c. formation of 2 molecules of pyruvate. d. conversion of 1 molecule of glucose to lactic acid.
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Ch7 MCAT - Ch 7 Multiple Choice 1. ATP is a. a short-term...

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