alleryStart learning →In aerobic respiration, what serves as the final electron acceptor?
AA molecule of lactate
BA molecule of sulfate
CA molecule of ethanol
DA molecule of oxygen
Answer & Solution
Correct answer: D. A molecule of oxygen
1. In aerobic respiration the final electron acceptor is an oxygen molecule.
2. Adenosine triphosphate is then produced using the energy of high-energy electrons carried to the chain.
3. Lactate and ethanol are final acceptors used when oxygen is absent, in fermentation.
4. Sulfate is the acceptor used by certain anaerobic prokaryotes, which is again a no-oxygen case.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 7 "Cellular Respiration", section 7.5 Metabolism without Oxygen_
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