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Question

Movement of molecules of a substance from the region of  their higher concentration to the region of their lower concentration without the involvement of a separating membrane is called

(a) Osmosis                          (b) Diffusion

(c) Active transport               (d) Capillarity


Solution

Diffusion is the net movement of molecules or atoms from a region of high concentration (or high chemical potential) to a region of low concentration (or low chemical potential) as a result of a random motion of the molecules or atoms. Diffusion is driven by a gradient in chemical potential of the diffusing species.
Option b is correct


Biology
Concise Biology
Standard X

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