Archaea,as a Group,are Not Pathogens.This is Because ________

Question

Archaea,as a group,are not pathogens.This is because ________.
A)they evolved without mammals
B)mammals evolved special defenses against them
C)mammalian hosts do not meet their environmental requirements
D)they are outcompeted by natural flora
E)None of the choices are correct

Accepted Answer

Archaea have adapted to live in extreme environments such as hot springs, deep sea vents, and salt lakes. These environments are very different from the conditions found in mammalian hosts, so archaea are not able to survive and thrive inside these hosts. Therefore, they are not considered pathogens.