Final answer:
The cell wall in most prokaryotes is made of peptidoglycan, providing structural support to the cell, with a composition that varies between bacterial and archaean cells.c) Made of peptidoglycan
Step-by-step explanation:
The cell wall, a feature of most prokaryotes, is made of peptidoglycan. This structure is crucial for providing strength and rigidity to the cell. The bacterial cell wall contains peptidoglycan composed of sugars and amino acids, which forms a mesh-like layer outside the plasma membrane. While bacterial and archaean prokaryotic cells both have cell walls, they differ in composition; Archaea lack peptidoglycan in their cell walls. It's important to note that animal cells do not have cell walls and plant cell walls are composed of cellulose, which is different from peptidoglycan.