The Archaea Known as Halophiles

Question

The archaea known as halophiles
A) require temperatures above 45∘C to survive.
B) require salt concentrations of 9% or greater to survive.
C) are members of the phylum Euryarchaeota.
D) are members of the Euryarchaeota and require temperatures above 45∘C.
E) are members of the Euryarchaeota and require salt concentrations above 9%.

Accepted Answer

Halophiles are a group of archaea that require high concentrations of salt to survive, typically above 9%, although some can tolerate even higher concentrations. They are members of the phylum Euryarchaeota, which includes many extremophiles, but not all halophiles require temperatures above 45∘C. Therefore, choice E is the best answer.