Question

Why Plasma Membrane is Called Selectively Permeable Membrane ?​

Answer 1

Answer:

The plasma membrane is called a selectively permeable membrane as it permits the movement of only certain molecules in and out of the cells. ... It allows hydrophobic molecules and small polar molecules diffuse through the lipid layer, but does not allow ions and large polar molecules cannot diffuse through the membrane

Answer 2

$\huge\bf{Answer :}$

✣ Plasma Membrane is known as "Selectively Permeable Membrane" because of following reasons :-

⇒ It allows only specific food particles or molecules to travel in and out of the cells.

⇒ It does not permits all the molecules or particles to diffuse through the membrane of the cell.

• But , if the plasma membrane gets damaged , then the particles can easily move in and out of the cells.

⇒ It acts as a barrier in the interchange of materials and particles through simple diffusion or the process of osmosis.