Alcohol fermentation and lactic acid fermentation are the two types of fermentation. Both fermentation oxidizes NADH to NAD+. Thus, option a is correct.
What is alcoholic fermentation?
Fermentation is the process that follows the glycolysis pathway when oxygen is absent. Alcoholic fermentation is a type of fermentation that yields carbon dioxide and ethanol along with NAD+. On the other hand, lactic acid fermentation yield lactate and NAD+.
In both the process of fermentation, NADH is oxidized to produce NAD+ as they serve as an electron acceptor in the redox reaction and maintains the cycle of glycolysis.
Therefore, alcohol fermentation and lactic acid fermentation oxidize NADH to NAD+.
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