Question

Why is a plasma membrane called a selectively permeable membrane?

Answer 1

Plasma membrane:

1. The plasma membrane is also referred to as the cell membrane.
2. It is the membrane found in all cells.
3. The plasma membrane is an external covering of the cell.
4. It separates the contents of the cell from the external surroundings.
5. It allows the entry and exit of only certain substances (e.g., molecules, ions, etc.)
6. So plasma membrane is called a selectively permeable membrane.