Question

Na^+/K^+ ATPase (sodium potassum adenosine triphosphatase) is found in the plasma membrane and catalyzes the exchange of sodium and potassium ions across the membrane. Sort the following statements about the transport system as either true or false.

Answer 1

Solution:
=> True:
1) Pumps K+ ions into the cell.
2)Pumps Na+ ions out of the cell.
3)Exchange 3 Na+ ions for 2 K+ ions.
4)Creates a membrane potentials that is negative on the inside.

=> False
1)Pumps Na+ ions into the cell.
2)Pumps K+ out of the cell.
3)Exchange 2 Na+ ions for 3 K+ ions.
4) Transport protein become adenylated by ATP during the transport cycle.

=> Na+/K+ (sodium potassium triphosphatase) is found in the plasma membrane and catalyzes the exchange of sodium and potassium ions across the membrane. Pumps K+ ions into the cell.Pumps Na+ ions out of the cell.Exchange 3 Na+ ions for 2 K+ ions to maintain negatively charged membrane on the inside.