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19.12

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knladia6928's version from 2016-02-22 23:31

Section

ABCD

 

LabelAnswer
ADirect active transport: The Na+-K+-ATPase keeps intracellular [Na+] low
BSecondary indirect active transport: The Na+-dicarboxylate cotransporter concentrates a dicarboxylate inside the cell using energy stored in the [Na+] gradient
CTertiary indirect active transport: The basolateral organic anion transporter (OAT) concentrates organic anions (OA–) inside the cell, using the energy stored in the dicarboxylate gradient
DOrganic anions enter the lumen by facilitated diffusion
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