Why do prokaryotes have cell walls and how do they work?

Thanks for the A2A. Prokrayotes have cell walls to protect themselves from strain, osmotic rupture, and lysis (the destruction of cells.) They are formed during cell division. read more

Also, the shape of a prokaryotic cell is dictated by the cell wall. The composition of the cell wall helps prokaryotes regulate the molecules that can enter and exit the cell. Plant cell walls are made mostly of cellulose, pectin and lignin. read more

Although prokaryotic cells have no nucleus, they do have DNA. The DNA exists freely in the cytoplasm as a closed loop. It has no protein to support it and no membrane covering it. A bacterium typically has a single looped chromosome. Cell wall. Many kinds of prokaryotes and eukaryotes contain a structure outside the cell membrane called the cell wall. read more