객관식
A sodium-potassium pump ________.
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3. Structure & Function of Cells
Active Transport
객관식
The force driving simple diffusion is ________, while the energy source for active transport is ________.
A
a concentration gradient; ADP
B
a concentration gradient; ATP hydrolysis
C
transmembrane pumps; an electrochemical gradient
D
phosphorylated carrier proteins; ATP
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