Question

Difference between active transport and diffusion ?

Answer 1

hey friends
diffusion moves ions from high concentration to low ,using no metabolic energy where as active transport moves ions from low concentrations to high ,using metabolic energy. 

hope this helps

Answer 2

        Active transport                                              Diffusion
1.Movement of particle from lower                  1.Movement of particles from
  concentration to higher concentration.          higher concentration to lower.

2.Highly selective                                             2.Not at all selective

3.Requires ATP energy for transport              3. Do not require ATP.

4.Requires special proteins for transfer         4.Requires no proteins

5.Potential gradient not required                   5.Potential gradient required.