ch17 - Chapter 17: Citric Acid Cycle Matching Choose the...

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Chapter 17: Citric Acid Cycle Matching Choose the correct answer from the list. Not all the answers will be used. A) oxaloacetate B) malate synthase C) malate D) malonate E) Krebs cycle F) aconitase G) succinyl-CoA synthetase H) α -ketoglutarate I) carbon dioxide J) malate dehydrogenase K) isocitrate L) succinate dehydrogenase 1. Another name for the citric acid cycle is the ______. Ans: E Level of Difficulty: easy Section: 17.1 Learning Objective: Overview of the Citric Acid Cycle 2. ______ is the first compound that is oxidized in the citric acid cycle. Ans: K Section: 17.3.C Level of Difficulty: moderate Learning Objective: Enzymes of the Citric Acid Cycle 3. ______ is an enzyme that catalyzes a substrate-level phosphorylation. Ans: G Section: 17.3.E Level of Difficulty: moderate Learning Objective: Enzymes of the Citric Acid Cycle 4. The citric acid cycle intermediate ______ is found at the beginning and at the end of the citric acid cycle. Ans: A Section: 17.1 Level of Difficulty: easy Learning Objective: Overview of the Citric Acid Cycle 132
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5. The only membrane-bound enzyme of the citric acid cycle is ______. Ans: L Section: 17.3.F Level of Difficulty: easy Learning Objective: Enzymes of the Citric Acid Cycle 6. The name of this citric acid cycle intermediate, ______, is derived from “apple.” Ans: C Section: 17.1 Level of Difficulty: easy Learning Objective: Overview of the Citric Acid Cycle 7. The enzyme ______ contains an iron - sulfur cluster. Ans: F Section: 17.3.B Level of Difficulty: moderate Learning Objective: Enzymes of the Citric Acid Cycle 8. The compound ______ is a competitive inhibitor of succinate dehydrogenase. Ans: D Section: 17.3.F Level of Difficulty: moderate Learning Objective: Enzymes of the Citric Acid Cycle 9. The enzyme ______ is part of the glyoxylate cycle. Ans: B Section: 17.5.C Level of Difficulty: moderate Learning Objective: Reactions Related to the Citric Acid Cycle Multiple Choice 10. Which of the following coenzymes is required by E 1 of the pyruvate dehydrogenase complex or catalytic activity? A) thiamine pyrophosphate B) lipoic acid C) FAD D) NAD + E) biotin Answer: A Section: 17.2.B Level of Difficulty: moderate Learning Objective: Synthesis of Acetyl-Coenzyme A 133
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11. E 2 of the pyruvate dehydrogenase complex contains a lipoyl group that is covalently attached to a ______ residue of the enzyme? A) glutamate B) serine C) lysine D) arginine E) histidine Answer: C Section: 17.2.B Level of Difficulty: moderate Learning Objective: Synthesis of Acetyl-Coenzyme A 12. Which of the following is an intermediate between citrate and isocitrate in the citric acid cycle? A) hydroxyethyl-TPP B) carboxybiotin C) oxalosuccinate D) succinyl-phosphate E) cis -aconitate Answer: E Section: 17.3.B Level of Difficulty: easy Learning Objective: Reactions Related to the Citric Acid Cycle 13. Which of the following is the metabolic intermediate that condenses with oxaloacetate to form citrate? A)
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ch17 - Chapter 17: Citric Acid Cycle Matching Choose the...

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