The anaerobic fermentation of a glucose molecule yields

The anaerobic fermentation of a glucose molecule yields 2 ATP molecules and either lactic acid or alcohol, depending on the type of fermentation. During anaerobic fermentation, glucose is converted into pyruvic acid, which is then broken down into either lactic acid or alcohol. This process releases a small amount of energy in the form of 2 ATP molecules, which is not as efficient as the aerobic respiration of glucose, which yields 38 ATP molecules. The byproducts of fermentation, lactic acid or alcohol, can be useful in certain industrial processes, such as the production of yogurt or alcoholic beverages.