Which of the following membrane activities requires energy from ATP hydrolysis?
A) facilitated diffusion of chloride ions across the membrane through a chloride channel
B) movement of water into a cell through aquaporins
C) movement of sodium ions from a lower concentration in a mammalian cell to a higher concentration in the extracellular fluid
D) movement of glucose molecules into a bacterial cell from a medium containing a higher concentration of glucose than inside the cell
E) movement of carbon dioxide out of a paramecium
Correct Answer:
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