What is the function of the cell membrane?
The basic function of the cell membrane is to protect the cell from its surroundings.
In addition, cell membranes are involved in a variety of cellular processes such as cell adhesion, ion conductivity and cell signalling. It serves as the attachment surface for several extracellular structures and other cells to hold them together to form tissues.
It provides shape to the cell and is selectively permeable and able to regulate what enters and exits the cell.
The cell also employs a number of transport mechanisms that involve biological membranes like passive osmosis and diffusion, transmembrane protein channels and transporters, endocytosis and exocytosis.