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AP Biology Test Chapter 9
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Short Description: AP Biology Test Chapter 9. Multiple Choice ... ____ 13. How many carbon atoms are fed into the citric acid cycle as a result of the oxidation of one ...
Content Inside: 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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