The permeability of different types of plasma membranes varies _________

significantly

Explanation

The permeability of different types of plasma membranes varies significantly. An amoeba’s plasma membrane has less than 1 percent of the permeability to water of the membrane of a human red blood cell. Most plasma membranes are quite permeable to water and other substances such as many simple sugars, amino acids, and lipid-soluble substances. Plasma membranes are relatively impermeable to larger complex molecules such as polysaccharides and proteins.