question_answer

\[N{{a}^{+}}-{{K}^{\text{+}}}\] pump is found in membranes of many cells, like nerve cells. It works against electro- chemical gradient and involve in integral protein ATPase. For each molecule of ATP used-

A) Three ions of \[N{{a}^{+}}\] are pumped out and two \[{{K}^{+}}\] are taken in

B) Three ions of \[N{{a}^{+}}\] are taken in and two \[{{K}^{+}}\]are pumped out

C) Two ions of \[N{{a}^{+}}\] are thrown out and three \[{{K}^{+}}\] are absorbed

D) Three ions of \[{{K}^{+}}\] are absorbed and three \[N{{a}^{+}}\] are pumped out