Answer:
Explanation: plasma membranes are the wall that surround the cell i.e the outer covering . They act as a protective covering.
Plasma members control exchange of material between the cell and environment.
Cell are kept in shape by plasma membrane, they are sites for Chemical reaction and cellular process and activities such as conductivity.
Membrane help to remove toxins out of the cell
They contain receptors and permit the flow of Ion and other molecules between cells.
They separate metabolism activities that are not compatible in body organelles.
