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Which of the following is most correct answer about the sodium potassium ATPase pump? a) It pumps two Na+ into the cell and three K+ out of the cell b) It pumps two K+ into the cell and three Na+ out of the cell c) It pumps three Na+ into the cell and two K+ out of the cell d) It pumps three K+ into the cell and two Na+ out of the cell

Question

Which of the following is most correct answer about the sodium potassium ATPase pump?

a) It pumps two Na+ into the cell and three K+ out of the cell

b) It pumps two K+ into the cell and three Na+ out of the cell

c) It pumps three Na+ into the cell and two K+ out of the cell

d) It pumps three K+ into the cell and two Na+ out of the cell

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Solution

The most correct answer is:

b) It pumps two K+ into the cell and three Na+ out of the cell

The Sodium-Potassium ATPase pump is a protein complex found in the plasma membrane of all animal cells. It uses energy from ATP to pump three sodium ions (Na+) out of the cell and two potassium ions (K+) into the cell. This creates a gradient of ions across the cell membrane, which is essential for many cellular processes, including nerve impulse transmission and muscle contraction.

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