Fermentation Glycolysis Glucose 2 NAD+- ·2ADP COOH 2 NADH 2 ATP C=0 2 Pyruvic acid 2(NADH +2H OR 2C02 2 NAD* COOH CHO CHOH CH3 2 Acetaldehyde CHa 2 Lactic acid NADH )+2H (a)Lactic acid 2 NAD+ fermentation CH2OH CHa 2 Ethanol (b)Alcohol fermentation Figure 5.19 Fermentation Figure 5.19