ap_chp_9_takehome_pdf - AP Biology Test Chapter 9 Multiple...

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AP Biology Test Chapter 9 Multiple Choice Identify the choice that best completes the statement or answers the question. ____ 1. What is the term for metabolic pathways that release stored energy by breaking down complex molecules? a. anabolic pathways b. catabolic pathways c. fermentation pathways d. thermodynamic pathways e. bioenergetic pathways ____ 2. When a glucose molecule loses a hydrogen atom as the result of an oxidation-reduction reaction, the molecule becomes a. dehydrogenated. b. hydrogenated. c. oxidized. d. reduced. e. an oxidizing agent. ____ 3. When a molecule of NAD (nicotinamide adenine dinucleotide) gains a hydrogen atom (not a hydrogen ion) the molecule becomes a. hydrogenated. b. oxidized. c. reduced. d. redoxed. e. a reducing agent. ____ 4. The oxygen consumed during cellular respiration is involved directly in which process or event? a. glycolysis b. accepting electrons at the end of the electron transport chain c. the citric acid cycle d. the oxidation of pyruvate to acetyl CoA e. the phosphorylation of ADP to form ATP ____ 5. An electron loses potential energy when it a. shifts to a less electronegative atom. b. shifts to a more electronegative atom. c. increases its kinetic energy. d. increases its activity as an oxidizing agent. e. attaches itself to NAD . ____ 6. Substrate-level phosphorylation accounts for approximately what percentage of the ATP formed during glycolysis? a. 0% b. 2%
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c. 10% d. 38% e. 100% ____ 7. During glycolysis, when glucose is catabolized to pyruvate, most of the energy of glucose is a. transferred to ADP, forming ATP. b. transferred directly to ATP. c. retained in the pyruvate. d. stored in the NADH produced. e. used to phosphorylate fructose to form fructose-6-phosphate. ____ 8. In addition to ATP, what are the end products of glycolysis? a. and b. and pyruvate c. NADH and pyruvate d. and NADH e. , , and citrate ____ 9. Which kind of metabolic poison would most directly interfere with glycolysis? a. an agent that reacts with oxygen and depletes its concentration in the cell b. an agent that binds to pyruvate and inactivates it c. an agent that closely mimics the structure of glucose but is not metabolized d. an agent that reacts with NADH and oxidizes it to NAD e. an agent that blocks the passage of electrons along the electron transport chain ____ 10. Why is glycolysis described as having an investment phase and a payoff phase? a. It both splits molecules and assembles molecules. b. It attaches and detaches phosphate groups. c. It uses glucose and generates pyruvate. d. It shifts molecules from cytosol to mitochondrion. e. It uses stored ATP and then forms a net increase in ATP. Use the following information to answer the next questions. In the presence of oxygen, the three-carbon compound pyruvate can be catabolized in the citric acid
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ap_chp_9_takehome_pdf - AP Biology Test Chapter 9 Multiple...

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