試題詳解

3. Which of the following statement best describes the sodium pump (Na*-K+ ATPase)?
(A) A major P-type transporter to adjust the imbalance of Nat and K+ concentration inside and outside the cell due to action potential
(B) It pumps out 2 sodium ions in exchange of 3 potassium ions into the cytosol
(C) The pump is a symporter
(D) The operation of the pump is a Nat-dependent dephorsphorylation and K⁺-dependent phosphorylation