How can anaerobic bacteria live in the oral cavity and respiratory tract although they are an aerobic environment?
Perhaps you might want to enquire more about the kind of microorganisms that live in the oral cavity and respiratory tract. From what i know, there are two kinds of anaerobic bacteria-obligatory anaerobes and facultative anaerobes. Obligatory anaerobes cannot live in an anaerobic environment because they can die due to the build-up of free radicals, which they do not have the enzymes to break up. On the other hand, facultative anaerobes can live in both aerobic and anaerobic environment.
