Are these examples of aerotolerant anaerobes
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Are these examples of aerotolerant anaerobes

[From: ] [author: ] [Date: 11-10-02] [Hit: ]
the majority of the species within the four genera you list are facultative anaerobes.These are organisms that use oxygen when it is available and fermentation or anaerobic metabolisms when oxygen is not present.Aerotolerant anaerobes cannot use oxygen to generate energy at all but are not killed by it because they have oxygen tolerance enzymes such as catalase and superoxide dismutase.This type of bacteria is fairly rare but an examples is Clostridium intestinale.Some people will mistakenly describe facultative anaerobes as aerotolerant since they survive in the presence of oxygen but are able to generate energy without it.But since they use it when it is available this is a mistake.......
*Lactobacillus
*Listeria
*Streptococcus
*Enterococcus

Thank you! :)

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No, the majority of the species within the four genera you list are facultative anaerobes. These are organisms that use oxygen when it is available and fermentation or anaerobic metabolisms when oxygen is not present.

Aerotolerant anaerobes cannot use oxygen to generate energy at all but are not killed by it because they have oxygen tolerance enzymes such as catalase and superoxide dismutase. This type of bacteria is fairly rare but an examples is Clostridium intestinale.

Some people will mistakenly describe facultative anaerobes as aerotolerant since they survive in the presence of oxygen but are able to generate energy without it. But since they use it when it is available this is a mistake.
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