And so, if that cell wasn't there, as our osmosis takes place and more and more water flows into that cell, that cell would eventually burst if it actually did not contain that cell wall. So the cell wall of bacterial cells basically functions to withstand the hydrostatic pressure that exists inside our cell. Now, in bacterial cells, the cell wall is made of a special type of molecule known as Peptidoglycan. So peptide means we have some type of peptide bond, and Glycoin means we have some type of sugar molecule. And that's exactly what our Peptidoglycan is. Peptidoglycan is a polymer of sugar as well as amino acids that create a mesh like structure.