Biology for IGCSE & O level - Movement Into And Out Of Cells (Section 4 - No. 10)
What is the role of carrier proteins in facilitating the movement of molecules across a membrane?
To create a concentration gradient.
To use ATP to move molecules.
To bind to a molecule and change shape to transport it across the membrane.
To break down the membrane, allowing free passage of molecules.
Explanation
Carrier proteins bind to specific molecules and undergo conformational changes to transport them across the membrane.
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