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What is the fate of pyruvic acid in an organism that uses aerobic respiration?
A. It is reduced to lactic acid.
B. It is converted into acetyl CoA before the Krebs cycle.
C. It is oxidized in the electron transport chain.
D. It is catabolized in glycolysis.
Revelant knowledge
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Anaerobic Respiration: Aerobic respiration is one type of respiration which occurs with oxygen. Aerobic respiration creates a higher amount of ATP than anaerobic respiration. One byproduct of aerobic respiration is CO2.
Answer: Option B is correct
Explanation: The end product of glycolysis in aerobic and anaerobic cell respiration is the pyruvate, or pyruvic acids. It is converted to acetyl CoA in the mitochondria of cells by the enzyme activity of pyruvate-dehydrogenase in aerobic respiration. Acetyl CoA is then used as a substrate for the Krebs cycle and TCA cycles.