Topic 2.6: Facilitated Diffusion

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Last updated 3:39 PM on 4/9/26
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5 Terms

1
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What is required for facilitated diffusion of charged ions?

Transport or channel proteins.

2
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How can a membrane become polarized?

Through the movement of ions across the membrane.

3
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Does facilitated diffusion of large polar molecules require energy?

No; they move down their concentration gradient.

4
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What are aquaporins?

Specialized proteins that transport large quantities of water across membranes.

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Facilitated diffusion

Type of passive transport where molecules move across a cell membrane from high to low concentration using special transport proteins