Aerobic bacteria

In response to a question by Nigel in class awhile ago, I did a little digging on aerobic bacteria and here’s an elaboration:

Aerobic bacteria can be divided into

  1. facultative anaerobes – can use oxygen but also have anaerobic means of respiration,
  2. microaerophiles – organisms that require oxygen to survive but require it in amounts less than that currently present in the atmosphere, and
  3. aerotolerant organisms – can survive in oxygen but use purely anaerobic means of respiration.

These bacteria use their cell membranes instead of mitochondria to utilize some oxygen during cellular respiration.

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