<span>the answer is semipermeable membrane. as the name suggests this membrane only allows certain molecules to pass in and out of the cell. Its selective in the materials that are allowed to pass through the membrane . While it allows water molecules to pass through the membrane other ions and molecules are selectively allowed.</span>
<span>A
membrane that allows only some materials to move in and out of the cell is semi
permeable. A semipermeable membrane is a type of biological or artificial membrane
that allows certain molecules or ions to move in and out of it by diffusion. The
rate of passage depends on the </span><span><span>permeability of the membrane to
each solute</span> and the pressure, concentration, and temperature of the
molecules or solutes on each side.</span>
