Question

What prevents the Na+ and K+ gradients from dissipating?

a.H+-K+ ATPase
b.Na+ and K+ leaks
c.Na+ cotransporter
d.Na+-K+ ATPase

Answer 1

D. It is an enzyme which is an active form of transport, pumping Na out of the cell while pumping K into the cell against their concentration gradients. This transport maintains the gradient.