What is the fate of CoA after it delivers an acetyl group into the citric acid cycle? A. It remains in an inactive form until the cell dies B. It is degraded and used for energy C. It is recharged with another acetate D. It is used in protein synthesis Reset Selection
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- After the citric acid cycle reactions run _________, one six-carbon glucose molecule has been completely broken down to CO2. a. once b. twice c. six times d. twelve timesDuring the citric acid (Krebs) cycle, the energy from acetyl-CoA is captured in which molecules? CHOOSE ALL THAT APPLY. A)Hydrogen Atoms B)Pyruvate C)ATP D)Carbon Dioxide E)Reduced electron carriersHow many molecules of Acetyl-CoA will be produced after complete ẞ-oxidation pathway of a 20:0 fatty acid? 12 14 10 8
- Fatty acid biosynthesis differs from β-oxidation in that: A. NADP+ is used in biosynthesis but not in β-oxidation. B. Biosynthesis uses malonyl-CoA while β-oxidation does not. C. Biosynthesis occurs in the cytoplasm while β-oxidation occurs in the mitochondria. D. Biosynthesis is a reductive process while β-oxidation is oxidation.Which of the following is NOT a fate of acetyl-CoA in mammals?a. Is used to synthesize cholesterolb. Is used to synthesize ketone bodiesc. Is used to synthesize fatty acidsd. Is used to synthesize malonyl-CoA that is in turn converted into alaninee. Is oxidized by citrate acid cyclef. All of above are fates of acetyl-CoAIf TWO acetyl CoA enter the citric acid cycle, for each glucose we started with, then how many of each product listed below do we get. _____ ATP _____ NADH _____FADH2 _____ CO2
- In the first step of the citric acid cycle, an acetyl group from acetyl CoA reacts with oxaloacetate to form (a) pyruvate (b) citrate (c) NADH (d) ATP (e) CO2Fats can be broken down into acetyl CoA for use in the Krebs cycle. Fats can also a. be built from excess acetyl CoA for energy storage. b. function as an electron carrier in the electron transport chain. c. be broken down directly into ATP. d. be broken down directly into NADH.Choose all of the molecules that are made in acetyl-CoA formation and the citric acid cycle that are important to note. NADH FADH2 CO2 ATP pyruvate glucose
- What happens to NADH and FADH2 made during glycolysis, acetyl-CoA formation, and the citric acid cycle? They do not serve any purpose in the cell. They drop electrons into the electron transport chain. They are used to drive the reactions of glycolysis. They are used to directly make proteins.___ molecules of ATP are ultimately formed per every acetyl-CoA that enters the citric acid cycle and the remaining ATP molecules are generated via the ___ of NADH and FADH2. A) Nine; oxidation B) Ten; reduction C) Ten; oxidation D)Nine; reductionBefore pyruvate enters the citric acid cycle, it is decarboxylated, oxidized, and combined with coenzyme A, forming acetyl CoA, carbon dioxide, and one molecule of (a) NADH (b) FADH2 (c) ATP (d) ADP (e) C6H12O6
