How are respiration and fermentation similar and how are they different?

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micheldemontaigne's profile pic

micheldemontaigne | High School Teacher | (Level 1) Adjunct Educator

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Both are "breathing" functions, but fermentation does so without oxygen. respiration occurs with oxygen.

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karigar | College Teacher | (Level 1) eNoter

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1. Both are bilogical oxidation reactions.

2. Respiration biological process which means complete oxidation of the reduced substrate to carbon dioxide and water.

3. Fermentation is also a biological process of substrate oxidation but incompletely. The products of fermentation are acetate, lactate, carbondioxde, etc.


1. Respiration yields more energy, while fermentation provides less energy.

2. Respration is an aerobic process, while fermentation occurs under anaerobic conditions.