The citric acid cycle is considered part of aerobic metabolism even though oxygen does not appear explicitly in any reaction because A) the NADH and FADH₂ produced are reoxidized in the electron transport chain linked to oxygen B) the reoxidation of NADH and FADH₂ leads to the production of considerable quantities of ATP C) it takes place in the mitochondrion D) it contains oxidation reactions

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Quizplus · Accepted Answer

The citric acid cycle is considered part of aerobic metabolism because the NADH and FADH2 produced are reoxidized in the electron transport chain, which is directly linked to oxygen. Oxygen acts as the final electron acceptor in the electron transport chain, making the process aerobic.

The Citric Acid Cycle Is Considered Part of Aerobic Metabolism