Do archaebacteria have cell walls?

Answer 1

Yes, archaebacteria (or archaea) do have cell walls, but they are structurally different from the cell walls found in bacteria (specifically eubacteria). The cell walls of archaea are not made of peptidoglycan, which is the primary component of bacterial cell walls. Instead, many archaea have cell walls made of proteins, polysaccharides, or other unique compounds such as pseudopeptidoglycan (which contains molecules similar to peptidoglycan but with distinct chemical properties). The composition of the cell wall can vary significantly among different archael species, contributing to their adaptability in various extreme environments.