Methanogenic euryarchaeotes are obligate anaerobes, some of which live in the intestinal tracts of mammals and other animals.From this information, one can conclude that the environment in the intestinal tracts
A) is rich in oxygen.
B) is rich in sulfur.
C) is low in oxygen.
D) lacks methane.
E) contains termites.

Question

Quizplus · Accepted Answer

Methanogenic euryarchaeotes are obligate anaerobes, which means they cannot survive in the presence of oxygen. Therefore, the environment in the intestinal tracts, where they live, must be low in oxygen.

Methanogenic Euryarchaeotes Are Obligate Anaerobes, Some of Which Live in the Intestinal