Existing in the presence of oxygen. The anaerobic catabolism of organic nutrients.
Glycolysis oxidizes glucose to two pyruvic acid molecules.
Glycolysis produces a net of 2 ATPs whether conditions are aerobic or anaerobic. No additional ATP is produced. Pyruvic acid loses carbon dioxide and is converted to the two- carbon compound acetaldehyde. Many bacteria and yeast carry out alcohol fermentation under anaerobic conditions. Commercially important products of lactic acid fermentation include cheese, yogurt, acetone and methyl alcohol.