Question

List three points of differences between osmosis and diffusion.

Answer 1

1. Osmosis is the diffusion of a substance through a semi-permeable membrane from a more dilute solution to a more concentrated solution.
2. The movement of molecules of a substance from a region of higher concentration to a region of lower concentration is termed as diffusion.

Osmosis	Diffusion
1. It involves the movement of solvent molecules.	1. It involves the movement of solute molecules.
2. Molecules move from lower concentration of solute to higher concentration of solute.	2. Molecules move from a higher concentration of solute to a lower concentration of solute.
3. It occurs only across a semi-permeable membrane.	3. It does not require a semi-permeable membrane.