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Give the comparison among simple diffusion, facilitated diffusion and active transportation.
Answer

Simple Diffusion

Facilitated Diffusion

Active Transport

1. Membrane proteins are not required .

2. It is not selective.

3. Saturation does not occur.

4. It does not occur against concentration gradient.

5. ATP is not required.

1. Membrane proteins are required.

2. It is selective.

3. Saturation occurs.

4. Not against the concentration gradient.

5. ATP is not required.

1 . Membrane proteins are required.

2. It is selective.

3. Saturation occurs

4. Against the concentration gradient. 

5. It needs ATP.