The bilipid layer is one of the major components of the cell membrane. cholesterol, a derivative of the fatty acids, plays an important role in the regulating of the cell membrane structure. The cholesterol regulates the membrane structure by making sure that the lipid bilayer is not very fluid. The molecule immobilizes the outer surface of the membrane. This reduces the fluidity of the membrane. Thus, the membrane becomes less soluble to water-based ions and molecules.
