Plasma membrane is very different from cell walls.
Plasma membrane is also called cell membrane or cytoplasmic
membrane. It is a biological membrane which separates the inside of all cells
from the external or outside environment. The plasma membrane is permeable
(selectively) to ions and organic molecules. It controls the movement of substances of both in and out
of cells. The plasma membrane’s basic function is to protect cells from their
surroundings. It is involved in several
different cellular processes like ion conductivity, cell adhesion and cell signaling
and serves as the attachment surface for many extracellular structures.
