Discussion
In aerobic respiration, the terminal electron acceptor is
Answer: A
Correct answer: oxygen
In aerobic respiration the electron transport chain passes electrons down a series of carriers and finally to oxygen, which is reduced to water. Oxygen’s high reduction potential is what makes the drop in free energy so large, and so allows aerobic respiration to yield far more ATP than fermentation or most anaerobic respirations. Nitrate is the acceptor in anaerobic respiration by denitrifiers.
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