Question

What do we mean by Simple diffusion and facilated diffusion?

Answer 1

In facilated diffusion , molecules only move with the aid of a protein in the membrane. In simple diffusion , molecules move down the concentration gradient but in facilated diffusion  molecules move up the concentration gradient

Answer 2

Explanation:

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Simple diffusion is the movement of molecules through a cell membrane without using the channels formed by integral membrane protein. Facilitated diffusion is the movement of molecules through those channels.