Problem: Facilitated diffusion across a biological membrane requires ________ and moves a substance ________ its concentration gradient.a) energy and channel proteins; against (up)b) transport proteins that make channels; towards (down)c) energy; towards (down)

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Simple Diffusion: simple and direct diffusion of small uncharged molecules through a cell membrane

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Problem Details

Facilitated diffusion across a biological membrane requires ________ and moves a substance ________ its concentration gradient.

a) energy and channel proteins; against (up)

b) transport proteins that make channels; towards (down)

c) energy; towards (down)

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Simple and Facilitated Diffusion concept. You can view video lessons to learn Simple and Facilitated Diffusion. Or if you need more Simple and Facilitated Diffusion practice, you can also practice Simple and Facilitated Diffusion practice problems.

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Based on our data, we think this problem is relevant for Professor Kim-Rajab's class at SMC.