Question

Define the term:

(a) Semi-permeable membrane (b)osmosis (2 Marks)

Answer 1

1. Semi-permeable membrane: A semipermeable membrane is a biological membrane that allows the movement of certain molecules or ions to pass through it. (1 Mark)
2. Osmosis: The movement of solvent molecules from a region of higher concentration to a region of its lower concentration across a semi-permeable membrane is termed osmosis.​ (1 Mark)