Question

Which molecules are distinctively different in Bacteria and Archaea?

Answer 1

One distinctive difference is in the cell wall...bacteria have walls composed of peptidoglycan, and archaea have walls composed of pseudopeptidoglycan (appropriately named - they both serve similar functions but are chemically different). Peptidoglycan's sugar component comprises linked N-acetylglucosamine and N-acetylmuramic acid molecules; pseudopeptidoglycan comprises N-acetylglucosamine and N-acetyltalosaminuronic acid.

The DNA have some minor differences....some introns are present in archaea, and some species of archaea do have histones, but the overall structure (circular loop) remains the same. I recall reading that RNA polymerase in archaea is more closely related to that in eukaryotes, though.

Answer 2

okay Thank you so much