AP BIOLOGY

Detailed explanation-1: -There are two types of fermentation, alcoholic fermentation and lactic acid fermentation. Our cells can only perform lactic acid fermentation; however, we make use of both types of fermentation using other organisms.

Detailed explanation-2: -Alcoholic fermentation occurs by the action of yeast; lactic acid fermentation, by the action of bacteria.

Detailed explanation-3: -Fermentation occurs in yeast cells, and a form of fermentation takes place in bacteria and in the muscle cells of animals. In yeast cells (the yeast used for baking bread and producing alcoholic beverages), glucose can be metabolized through cellular respiration as in other cells.

Detailed explanation-4: -During fermentation, yeast cells convert cereal-derived sugars into ethanol and CO 2 .