what types of organisms are capable of fermentation
Obligate anaerobes may use fermentation or anaerobic respiration. Aerotolerant organisms are strictly fermentative. In the presence of oxygen, facultative anaerobes use aerobic respiration; without oxygen, some of them ferment; some use anaerobic respiration.or practical purposes, there are three categories of anaerobe: 1  Obligate anaerobes, which are harmed by the presence of oxygen. 2  Aerotolerant organisms, which cannot use oxygen for growth, but tolerate its presence. 3  Facultative anaerobes, which can grow without oxygen but use oxygen if it is present.