Question

17. What are the steps that the Na+/K+ pump follows? a. ???-I chose E 1. Na+ and K+ bind to the pump inside of the cell, Na+ and K+ are then released outside of the cell ii. Na+ binds to the pump inside the cell, ATP gives it energy to change its conformation, Na+ is released outside the cell, K+ then binds to the pump outside the cell, the pump dephosphorylates causing a conformational change, K+then enters the cell iii. Na+ and K+ bind to the pump outside the cell, Na+ and K+ are then released inside the cell iv. K+ binds to the pump inside the cell, ATP gives it energy to change its conformation, K+ is released outside the cell, Na+ then binds to the pump, the pump dephosphorylates causing a conformational change, Na+ then enters the cell Na+ binds to the pump from outside the cell, ATP gives it energy to change its conformation, Na+ is released inside of the cell, K+ then binds to the pump, the pump dephosphorylates causing a conformational change, K+ now leaves the cell.

Answer 1

17. Answer: a. lii) Nat binds to the pump inside the cell, ATP gives it energy to change its conformation, Nat is released outside the cell, kt then bind to the pump outside the cell, the pump de phosphorylates causing conformational change; Kt then enters the cell. Explanation : Each and every cycle of wat/kt pump we know that 3 wat go outside the membrane and 2 ut enters into the cell. So, each cycle, wat binds with carrier protein inside the cell. Then the ATP degrades and the Phosphate bindes with the protein. As, the protein is phosphorylated, it changes its conformation. Then the sodium released outside the cell at this time kt binds with the protein. The pump then de phosphorylates and the shape changes or conformational Change happens. It is released inside the cell. 3 Nat goes out side, 2 ut enters into the cello Hlence,