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12-12-2016
Chemistry

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Which of the following characterizes the sodium-potassium pump?
A) Sodium ions are pumped out of a cell against their gradient.
B) Potassium ions are pumped into a cell against their gradient.
C) The pump protein undergoes a conformational change.
D) Only A and B are correct.
E) A, B, and C are all correct.

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12-12-2016

E
Sodium ions are pumped out against the concentration gradient while potassium ions are pumped in against the concentration gradient and the proteins may go conformational change during this, making all three options correct.

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