What is the difference between diffusion and facilitated diffusion

what is the difference between diffusion and facilitated diffusion

Diffusion :

Diffusion is net movement of anything from a region of higher concentration to a region of lower concentration. Diffusion is driven by a gradient in concentration.

facilitated diffusion:

Facilitated diffusion is a form of facilitated transport involving the passive movement of molecules along their concentration gradient, guided by the presence of another molecule – usually an integral membrane protein forming a pore or channel.

Simple diffusion is passive but facilitated diffusion is an active process

Explanation:

In facilitated diffusion, molecules just move by the help of a protein in the membrane. Simple diffusion is passive while facilitated diffusion is an active process that utilizes energy. Simple diffusion needs molecules to move within special doorways in the cell membrane.

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