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Questions and Answers
What is the purpose of the conversion of succinyl-CoA to succinic acid in the citric acid cycle?
What is the purpose of the conversion of succinyl-CoA to succinic acid in the citric acid cycle?
- To convert GDP to GTP in a coupled reaction
- To reduce NAD+ to NADH + H+
- To regenerate NAD+ from NADH
- To synthesize GTP through substrate-level phosphorylation (correct)
Which molecule is reduced to FADH2 in the citric acid cycle?
Which molecule is reduced to FADH2 in the citric acid cycle?
- NADH + H+
- NAD+
- FAD+ (correct)
- FADH2
What is the final product synthesized when GTP is converted to GDP in the citric acid cycle?
What is the final product synthesized when GTP is converted to GDP in the citric acid cycle?
- NADH
- ATP (correct)
- ADP
- FADH2
How many molecules of NADH + H+ are synthesized during the TCA cycle from one molecule of glucose?
How many molecules of NADH + H+ are synthesized during the TCA cycle from one molecule of glucose?
Which compound is the first member of the citric acid cycle that must be continuously replenished for the cycle to continue?
Which compound is the first member of the citric acid cycle that must be continuously replenished for the cycle to continue?
What is the fate of pyruvate under aerobic conditions?
What is the fate of pyruvate under aerobic conditions?
During fermentation in plants, pyruvate is converted into which compound?
During fermentation in plants, pyruvate is converted into which compound?
Which molecule is NOT reduced during the citric acid cycle?
Which molecule is NOT reduced during the citric acid cycle?
How many molecules of ATP are synthesized from one molecule of glucose in glycolysis and the TCA cycle combined?
How many molecules of ATP are synthesized from one molecule of glucose in glycolysis and the TCA cycle combined?
What happens during substrate-level phosphorylation in the citric acid cycle?
What happens during substrate-level phosphorylation in the citric acid cycle?
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