IB Biology HL B2.1.8 Selectivity in Permeability Topic Practice

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Study B2.1.8—Selectivity in permeability conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

Question 1

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Cells use a variety of methods to move particles across membranes. What is a similarity between facilitated diffusion and active transport?

A

Both are carried out by proteins in the membrane.

B

Both move particles against the concentration gradient.

C

Both use ATP.

D

Both move non-polar ions across the membrane.

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