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Obligate anaerobic beings and facultative anaerobic beings

Write the main difference among obligate anaerobic beings and facultative anaerobic beings?

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Facultative anaerobic beings, similar to the fungi Saccharomyces cerevisiae, brewing yeast, can survive beneath oxygen-poor environments carrying out fermentation. Though whenever oxygen is available to such beings carry out aerobic respiration.

Obligate anaerobic beings are such that can’t survive if oxygen is present. Many fungi, some bacteria (such as the agent of botulism Clostridium botulinum, and the agent of tetanus, Clostridium tetani) and various protozoans are illustrations of obligate anaerobes.

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