What distinguishing feature characterizes aerobic and anaerobic respiration but does not play a role in fermentation pathways?

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Quizplus · Accepted Answer

The presence of an electron transport chain is a characteristic feature of both aerobic and anaerobic respiration, which distinguishes them from fermentation pathways. In respiration, electron transport chains are used to generate a proton gradient across a membrane, which drives the production of ATP. Fermentation pathways, on the other hand, do not involve electron transport chains and instead rely on other mechanisms to generate ATP, such as substrate-level phosphorylation. Oxygen availability is another key distinguishing feature of aerobic and anaerobic respiration, which is not relevant to fermentation.

What Distinguishing Feature Characterizes Aerobic and Anaerobic Respiration but Does