Question

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Describe the passive and active transport of substances across the cell membrane with the help of anyone suitable example.
Carries 3 mark
Class 11 CBSE

Answer 1

Explanation:

In active transport the membrane need ATP to pass the substances from outside to inside the cell as it is against the concentration of the cell and an uphill movement of conc..

.In passive transport it is along the gradient and no need of ATP for transport. It is a downhill movement.

Answer 2

hey...Diffusion through a permeable membrane moves a substance from an area of high concentration (extracellular fluid, in this case) down its concentration gradient (into the cytoplasm). The passive forms of transport, diffusion and osmosis, move materials of small molecular weight across membranes.