In the Krebs cycle, substrate-level phosphorylation accompanies the formation of:
Correct answer: C. Succinate
- A. Citrate
- B. Alpha-ketoglutarate
- C. Succinate
- D. Fumarate
Explanation
Coenzyme A is removed from Succinyl CoA to form succinate. The reaction releases sufficient energy which is used to combine GDP and Pi forming GTP. GTP reacts with ADP to form ATP while GTP is again converted into GDP. In this way a molecule of ATP is generated in this reaction
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About Bioenergetics
Cellular respiration explains how cells release energy from glucose through glycolysis, the link reaction, Krebs cycle and electron transport chain. It includes ATP production, substrate-level and oxidative phosphorylation, aerobic versus anaerobic respiration, and the roles of mitochondria, oxygen and fermentation in energy transfer.
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