Which process uses proteins to move molecules against a concentration gradient? Required to answer. Single choice.
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What is a concentration gradient? A concentration gradient is the difference in concentration of a substance between two areas. Show more…
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Facilitated diffusion a. moves molecules against their concentration gradients. b. requires transmembrane proteins. c. requires ATP. d. All of the above
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Facilitated diffusion across a membrane requires ______ and moves a solute ________ its concentration gradient. a. transport proteins... up (against) b. transport proteins... down c. energy and transport proteins... up d. energy and transport proteins... down
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