In prokaryotic cell architecture, how do the cell walls of archaea and bacteria differ?

• A. Archaeal cell walls contain peptidoglycan with N-acetylmuramic acid, whereas bacterial cell walls lack peptidoglycan and rely mainly on S-layers.
• B. Archaeal cell walls are composed primarily of cellulose, whereas bacterial cell walls are composed primarily of chitin.
• C. Bacterial cell walls typically contain peptidoglycan (murein), whereas archaeal cell walls lack peptidoglycan and may instead have pseudopeptidoglycan or an S-layer of proteins/glycoproteins.
• D. Both archaea and bacteria have identical cell walls made of peptidoglycan; they differ mainly in the presence or absence of internal membrane-bound organelles.

Answer: (C)