What Is The Cell Membrane Made Of?
The cell membranes are composed of phospholipid bilayers which protect the internal cellular structure against an energy background. Cell membranes are permeable allowing the exchange of fluids, nutrients and ions with the external environment. Cell membranes are normally composed of Proteins, ampiphatic lipids, phospholipids, glycolipids and steroids. The inner walls of the cell membrane are negatively charged. The arrangement of materials in the cell membranes make it semi-permeable, allowing a selective range of ions and materials to exchange with the external environment.