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27 November, 07:01

One function of both alcohol fermentation and lactic acid fermentation is to a. oxidize NADH to NAD+. b. reduce NAD + to NADH. c. reduce FAD + to FADH2. d. reduce FADH2 to FAD+. e. none of the above

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  1. 27 November, 09:03
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    a. oxidize NADH to NAD+

    Explanation:

    Alcohol fermentation and lactic acid fermentation share a common step that is glycolysis. Since the organisms or cells that carry out the fermentation lack oxygen, oxidative phosphorylation can not oxidize NADH into NAD+. Without the supply of NAD+, glycolysis cannot occur as NAD + serves as electron acceptor during redox reactions of glycolysis.

    To maintain the continuity of glycolysis, alcohol fermentation and lactic acid fermentation oxidize the NADH into NAD + which in turn enter the glycolysis.
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