What is the end product of glycolysis that does not enter the Krebs cycle directly?
Correct answer: C. Pyruvic acid
- A. Acetic acid
- B. Alpha-ketoglutarate
- C. Pyruvic acid
- D. Citrate
Explanation
Pyruvic acid is the primary end product of glycolysis. It must be converted into acetyl-CoA before it can enter the Krebs cycle.
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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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