Biology for IGCSE & O level - Movement Into And Out Of Cells (Section 5 - No. 12)
What is the difference between diffusion and facilitated diffusion?
Diffusion requires ATP while facilitated diffusion does not.
Facilitated diffusion requires protein channels, while diffusion does not.
Diffusion moves molecules against the concentration gradient.
Diffusion only moves water molecules.
Explanation
Facilitated diffusion utilizes protein channels or carrier proteins to transport molecules across the cell membrane, while diffusion doesn't require any proteins.
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