Another scientist has given you a culture of an archaea that is an extreme thermophile and is an obligate anaerobe. It does not produce methane and will not grow under high salt conditions or in very acidic conditions. What group does this organism belong to?

Question

Quizplus · Accepted Answer

The characteristics given for the archaea culture suggest that it belongs to the Crenarchaeota group, which includes extremophiles that thrive in high temperature and anaerobic conditions. The culture does not produce methane, so it cannot be methanogen. It also cannot grow under high salt conditions, so it is not an extreme halophile, and it will not grow in very acidic conditions, ruling out Thermoplasmatales. Nanoarchaeota is a group of parasitic archaea that depend on host organisms for survival and is unlikely to be an obligate anaerobe.

Another Scientist Has Given You a Culture of an Archaea