Question

What do you mean by passive and active transport? Write a note on diffusion.​

Answer 1

Answer:

Diffusion is the passive movement of molecules along a concentration gradient of higher concentration to a lower concentration.

Active Transport: Active transport is the movement of particles across a cellular membrane from a lower to a higher concentration by the use of metabolic energy.

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Answer 2

Answer:

Active transport is the movement of molecules or ions against a concentration gradient (from an area of lower to higher concentration), which does not ordinarily occur, so enzymes and energy are required. Passive transport is the movement of molecules or ions from an area of higher to lower concentration.