Before entering the tricarboxylic acid cycle, the pyruvate produced by the glycolytic pathway is first converted to:
Correct answer: A. Acetyl-coenzyme A.
- A. Acetyl-coenzyme A.
- B. Citrate
- C. Coenzyme A
- D. Ethanol
Explanation
Acetyl-Coenzyme A (acetyl-CoA) is a crucial molecule in cellular metabolism, serving as a key intermediate in various biochemical pathways. It plays a central role in the catabolism (breakdown) of nutrients and serves as a precursor for the synthesis of important molecules.
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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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