Multiple Choice
Which of the following is an example of active transmembrane transport (requires energy input to move a solute against its electrochemical gradient)?
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9. Transport Across Membranes
Principles of Transmembrane Transport
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Which of the following is an example of active transmembrane transport (requires energy input to move a solute against its electrochemical gradient)?
A
Glucose moving into a cell through a GLUT transporter down its concentration gradient
B
Oxygen diffusing directly through the lipid bilayer from high to low concentration
C
Na+/K+ ATPase pumping Na+ out of the cell and K+ into the cell using ATP hydrolysis
D
Water moving across the plasma membrane through aquaporins in response to an osmotic gradient
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