Which of the Following Statements About Archaea is FALSE

Question

Which of the following statements about archaea is FALSE?
A)They are prokaryotes.
B)They lack peptidoglycan in their cell walls.
C)Some are thermoacidophiles;others are extreme halophiles.
D)They evolved before bacteria.
E)Some produce methane from carbon dioxide and hydrogen.

Accepted Answer

Archaea and bacteria are both prokaryotes, and archaea have been found to lack peptidoglycan in their cell walls. Some archaea are thermoacidophiles (thriving in hot, acidic environments) or extreme halophiles (living in very salty conditions). However, it is not true that archaea evolved before bacteria; both groups emerged at roughly the same time in Earth's history. Lastly, some archaea are known to produce methane from carbon dioxide and hydrogen, making them important players in the carbon cycle.