Such versatility of membrane functions is achieved through variability in the chemical composition of the plasma membrane. Chemically, the plasma membrane is composed of a wide variety of proteins, lipids in the form of cholesterol, phospholipid and sphingolipid and carbohydrates in the form of glycoproteins.
In this way, what structure makes up the plasma membrane?
This arrangement of phospholipid molecules makes up the lipid bilayer. The phospholipids of a cell membrane are arranged in a double layer called the lipid bilayer. The hydrophilic phosphate heads are always arranged so that they are near water.
What are the three main functions of the plasma membrane?
Biological membranes have three primary functions: (1) they keep toxic substances out of the cell; (2) they contain receptors and channels that allow specific molecules, such as ions, nutrients, wastes, and metabolic products, that mediate cellular and extracellular activities to pass between organelles and between the