Question

List two points of differences between the following.

Diffusion and active transport.

Answer 1

1. Diffusion is the movement of molecules of a substance from a region of higher concentration to a region of lower concentration.
2. Active transport is the process of movement of molecules from a region of lower concentration to a region of higher concentration against a concentration gradient with the use of external energy.

Diffusion	Active Transport
1. Energy is not utilised.	1. Energy is utilised in the form of ATP.
2. No participation of carrier proteins.	2. Carrier proteins are involved in active transport.