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. Classify the statements about the transport system as either true or false.

Answer 1

Answer:

See explanation below.

Explanation:

• umps Na+ ions out of cell,
• Pumps K+ ions into cell ,
• Exchanges 3 Na ions for 2 K ions ,
• Creates a membrane potential that is negative on the inside ,
• The transport protein becomes phosphorylated by ATP during the transport cycle.
• Three trans-membrane transport steps are involved in the transport of glucose from the intestine across the intestinal cell into the blood.

1. ATP driven antiport of Na+ out of cell and K+ into cell.
2. Symport of glucose and Na+ into intestinal cell from intestine.
3. Uniport of glucose from the intestinal cell into the blood.