Facultative anaerobic organism
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(Redirected from Facultative bacteria)
A facultative anaerobe is an organism that makes ATP by aerobic respiration if oxygen is present, but is capable of switching to fermentation or anaerobic respiration if oxygen is absent.[1] An obligate aerobe, by contrast, cannot make ATP in the absence of oxygen, and obligate anaerobes die in the presence of oxygen.[2]
Some examples of facultatively anaerobic bacteria are Staphylococcus spp., Streptococcus spp.,[3] Escherichia coli, Listeria spp.[4] and Shewanella oneidensis. Certain eukaryotes are also facultative anaerobes, including fungi such as Saccharomyces cerevisiae[5] and many aquatic invertebrates such as Nereid (worm) polychaetes.[6]
See also
- Aerobic respiration
- Anaerobic respiration
- Fermentation
- Obligate aerobe
- Obligate anaerobe
- Microaerophile
References
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