Na^+/K^+ ATPase (sodium potassium adenosine triphosphatase) is found in the plas
ID: 1008609 • Letter: N
Question
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.Explanation / Answer
1. The Na+/K+ ATPase enzyme is a solute pump that pumps sodium out of cells while pumping potassium into cells.
2.The sodium-potassium pump moves 3 sodium ions out and moves 2 potassium ions into cell.
3.In order to maintain the cell membrane potential, cells keep a low concentration of sodium ions and high levels of potassium ions within the cell (intracellular). The sodium-potassium pump moves 3 sodium ions out and moves 2 potassiumions in, thus, in total, removing one positive charge carrier from the intracellular space.
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