NEET Biology question

Na+-K+ pump is found in membranes of many cells, like nerve cells. It works against an electrochemical gradient and involves use of ATP. Which of the following correctly describes it?

(A)3 ions of Na+ are pumped out and 2 K+ are taken inCorrect
(B)3 ions of Na+ are taken in and 2 K+ are pumped out
(C)2 ions of Na+ are thrown out and 3 K+ are absorbed
(D)3 ions of K+ are absorbed, 3 Na+ are pumped out

Answer: (A)

Solution

The sodium-potassium pump actively transports three Na+ ions out of the cell for every two K+ ions brought into

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Question ID VK-117495