Question

Why the plasma membrane is called a selectively permeable membrane? (page 61)

Answer 1

Answer:

Plasma membrane called a selectively permeable membrane because it regulates the movement of substances from within to outside of the cell. This means that the plasma membrane allows the entry of some substances while preventing the movement of some other substance.

Answer 2

The plasma membrane is called a selectively permeable membrane.

• Because plasma membrane helps in transfering the selective substance from inside the cell to outside and from outside the cell to inside the cell.
• Plasma membrane allow some selective substance to pass out of it and at the same time restrict some substance from passing from it.