Biology for IGCSE & O level - Movement Into And Out Of Cells (Section 2 - No. 10)
What is the role of a protein channel in facilitated diffusion?
To provide energy for the movement of molecules.
To move molecules against their concentration gradient.
To allow specific molecules to pass through the cell membrane.
To prevent any movement of molecules.
Explanation
Protein channels provide a pathway for specific molecules to move across the cell membrane.
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