Cell Membrane Function Simple. Cell junctions (or intercellular bridges) are a class of cellular structures consisting of multiprotein complexes that provide contact or adhesion between neighboring cells or between a cell and the extracellular matrix in animals. Animal cells are contained in just a membrane.
Proteins and phospholipids make up most of the membrane structure. The cell membrane is a thin flexible layer around the cells of all living things. Why is membrane transport vital for normal cell function?
The cell membrane, therefore, has two functions:
The plasma membrane is a protective barrier that surrounds the interior of the cell. It is made of millions of smaller molecules that create a flexible and porous container. Membrane, in biology, the thin layer that forms the outer boundary of a living cell or of an internal cell compartment. It regulates the movement of materials into and out of the cell and facilitates electrical signaling between them.
