Solution

Plasma membranes also contain carbohydrates, predominantly glycoproteins, but with some glycolipids. For the most part, no glycosylation occurs on membranes within the cell. Glycosylation usually occurs on the extracellular surface of the plasma membrane. The glycocalyx is an important feature in all cells, especially epithelial with microvilli. Glycocalyx participates in cell adhesion, etc.