Fermentation can be defined as completion of metabolism:

Question

Quizplus · Accepted Answer

Fermentation can occur in the absence of oxygen and without a terminal electron acceptor. In the absence of an electron transport system, ATP is only produced through substrate-level phosphorylation reactions, which may produce only a few ATP molecules. Therefore, fermentation involves the completion of metabolism without further ATP production after a few substrate-level phosphorylation reactions.

Fermentation Can Be Defined as Completion of Metabolism