AP BIOLOGY

Detailed explanation-1: -Fermentation reactions occur in the cytoplasm of both prokaryotic and eukaryotic cells. In the absence of oxygen, pyruvate does not enter the mitochondria in eukaryotic cells.

Detailed explanation-2: -The term fermentation now denotes the enzyme-catalyzed, energy-yielding pathway in cells involving the anaerobic breakdown of molecules such as glucose. In most cells the enzymes occur in the soluble portion of the cytoplasm.

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: -Fermentation takes place in a cell’s cytoplasm, not in mitochondria. Types of Fermentation There are several types of fermentation. One type occurs when glucose is changed into ATP and a waste product called lactic acid.