Question

why are archaea considered to be distinct from bacteria?
a they have distinct differences in their dna.
b archaea lack a nucleus and membrane - bound organelles.
c bacteria do not have a cell wall.
d archaea do not have ribosomes.

Explanation:

Archaea have distinct DNA - based differences from bacteria. Both archaea and bacteria are prokaryotes lacking a nucleus and membrane - bound organelles. Bacteria have cell walls, and both archaea and bacteria have ribosomes.

Answer:

A. They have distinct differences in their DNA.