Which Statement About the Domain Archaea is True

Question

Which statement about the domain Archaea is true?
A)Genetic prospecting has recently revealed the existence of many previously unknown archaean species.
B)No archaeans can reduce CO₂ to methane.
C)The genomes of archaeans are unique, containing no genes that originated within bacteria.
D)No archaeans can inhabit solutions that are nearly 30% salt.
E)No archaeans are adapted to waters with temperatures above the boiling point.

Accepted Answer

Recent genetic prospecting has indeed revealed the existence of many previously unknown archaean species. Option B is incorrect as there are certain archaeans that can reduce CO₂ to methane. Option C is incorrect as archaeans do contain genes that originated within bacteria. Option D is incorrect as there are many archaeans that inhabit environments with high salt concentrations. Option E is incorrect as there are many archaeans that are adapted to extreme temperatures, including those above the boiling point.