01 n. pl. Anaërobic bacteria. They are called facultative anaërobes when able to live either in the presence or absence of free oxygen; obligate anaë…
-
1.
Anaërobic bacteria. They are called facultative anaërobes when able to live either in the presence or absence of free oxygen; obligate anaërobes, or obligatory anaërobes, when they thrive only in its absence.(Bacteriol.)