alleryThe terminal electron acceptor in the ETS is
ACarbon dioxide from substrate
BMolecular oxygen forming water
CNAD+ regenerated as NADH
DFAD+ regenerated as FADH2
Answer & Solution
Correct answer: B. Molecular oxygen forming water
Molecular oxygen receives the electrons at Complex IV (cytochrome c oxidase) and combines with protons to form water.
Without oxygen, the entire ETS stalls and aerobic respiration stops.
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