Fermentation is an anaerobic process (meaning it doesn't require oxygen) used by many cells to produce ATP from glucose when oxygen levels are low or absent.
Related terms
Lactic Acid Fermentation: A type of fermentation that occurs in animal cells and some bacteria where glucose is converted into lactic acid and ATP.
Alcoholic Fermentation: A type of fermentation that occurs in yeast and some bacteria where glucose is converted into ethanol, carbon dioxide, and ATP.