Final answer:
Members of Domain Bacteria have peptidoglycan in their cell walls, while prokaryotic members of Domain Archaea have a unique cell wall composition without peptidoglycan.
Step-by-step explanation:
The question deals with the differences in cell wall composition between two prokaryotic domains. Members of the Domain Bacteria have peptidoglycan in their cell walls, which is composed of sugars and amino acids, providing strength and rigidity to the cell. In contrast, prokaryotic members of the Domain Archaea have a unique cell wall composition that lacks peptidoglycan. Instead, archaeal cell walls may have other types of polymers. The difference in cell wall composition is one of several biochemical and structural differences between these two domains. Therefore, the correct answer to the question is: Members of Domain Bacteria have peptidoglycan in their cell walls, whereas prokaryotic members of Domain Archaea have unique cell wall composition.