One function of both alcohol fermentation and lactic acid fermentation is to Naim 15:19 AP Biology Chapter 9 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. None of the above Answer: C Learn More : Share this Share on FacebookTweet on TwitterPlus on Google+