20) One function of both alcohol fermentation and lactic acid fermentation is to A) reduce NAD+ to NADH. B) reduce FAD+ to FADH2. C) oxidize NADH to NAD+. D) reduce FADH2 to FAD+. E) do none of the above.

C) oxidize NADH to NAD+.

Explanation:

Fermentation is the process of producing ATP in the absence of oxygen. There are many types of fermentation in which the most commonly known are alcohol fermentation and lactic acid fermentation.

Alcohol fermentation is defined as the conversion of sugar into into cellular energy(ATP) and into ethanol and carbon dioxide as waste products.

Lactic acid fermentation is the process by which glucose and other six-carbon sugar are converted into cellular energy and the metabolite lactate(lactic acid in solution).

Alcohol fermentation and lactic acid fermentation both function in the oxidation of NADH to NAD+.

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