Na^+/K^+ ATPase (sodium potassium 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. Creates a membrane potential that is negative on the inside. The transport protein becomes adenylated by ATP during the transport cycle. Pumps Na^+ ions out of the cell. Pumps K^+ ions out of the cell. Exchanges 3 Na^+ ions for 2 K^+ ions. Pumps Na^+ ions into the cell. Pumps K^+ ions into the cell. Exchanges 3 K^+ ions for 2 Na^+ ions.