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Both simple (passive) diffusion and facilitated diffusion a. draw on the proton

ID: 12863 • Letter: B

Question

Both simple (passive) diffusion and facilitated diffusion a. draw on the proton motive force in order to power transport. b. consume ATP c. move molecules from a region of high concentration to a region of lower concentration. d. are saturable. The following image shows a glycerol uptake facilitator in Escherichia coli. This transporter a. is an antiport. b. is a major intrinsic protein (MIP) c. is an example of a type of transporter that is only ever found in E. coli, d. is also termed an ABC transporter.

Explanation / Answer

1.C 2.d

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