Question

7. Differentiate between active transport and diffusion

Answer 1

Active transport-

1. It is a rapid process.

2. It can move materials through a biological membrane against the concentration gradient.

3. It takes place in one direction only.

4. It needs carrier proteins to occur.

5. It uses energy of APT.

6. It brings about selective uptake of materials.

7. It leads to accumulation of materials in the cell.

Diffusion-

1. It is a slow process.

2. It can move materials across a biomembrane down the concentration gradient.

3. It takes place in both directions.

4. It occurs without the help of carrier proteins.

5. It doesn't use energy.

6. It allows all transmissible molecules to pass through membrane.

7. It doesn't accumulate material in the cell.