A) 3 ions of \[N{{a}^{+}}\]are pumped out and two \[{{K}^{+}}\]are taken in
B) 3 ions of \[N{{a}^{+}}\]are taken in and \[2{{K}^{+}}\]are pumped out
C) 2 ions of\[N{{a}^{+}}\]are thrown out and \[3{{K}^{+}}\] are absorbed
D) 3 ions of \[{{K}^{+}}\] are absorbed and \[3N{{a}^{+}}\] are pumped out
Correct Answer: A
Solution :
Energy from ATP causeconfermational change in the solute carrier complex. From energy of one ATP, \[3N{{a}^{+}}\] pumped outside and two \[{{K}^{+}}\] taken in. This process of expelling out Na+ ions and drawing in \[{{K}^{+}}\] ions against the concentration gradient and electrochemical gradient is called sodium-potassium exchange pump of the cell. This pump operates by involving the \[N{{a}^{+}}\] - \[{{K}^{+}}\] - ATPase enzyme located in the cell membrane. Such electrogenic pump develops positive charge outside the membrane and a negative charge to cell?s interior. This difference in charge on either side of the membrane of a resting neuron is the resting membrane potential.You need to login to perform this action.
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