Question

Why is the cell membrane called a semi-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.

Explanation:

This is all I know.

Hope it helps~

Good luck with your work!!~