In which method of transport in the plasma me | vedclass

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(C) Simple diffusion is the movement of molecules from a region of higher concentration to a region of lower concentration without the expenditure of

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Simple diffusion

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(C) Simple diffusion is the movement of molecules from a region of higher concentration to a region of lower concentration without the expenditure of energy.This process does not require any membrane proteins or carrier molecules to facilitate the movement of substances across the plasma membrane.In contrast,active transport,facilitated diffusion,and the $Na^+ -K^+$ pump all require specific membrane proteins or carrier molecules to transport substances across the membrane.

In which method of transport in the plasma membrane is a carrier molecule not required?

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