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Na^(+)-K^(+) pump is found in membranes ...

`Na^(+)-K^(+)` pump is found in membranes of many cells, like nerve cells. It works against electo chemical gradient and involve an integral protin ATPase. For each molecule of ATP used

A

`3` ions of `Na^(+)` are pumped out and two `K^(+)` are taken in

B

`3` ions of `Na^(+)` are taken in and `2K^(+)` are pumped out

C

`2` ions of `Na^(+)` are thrown out and `3K^(+)` are abosorbed

D

`3` ions of `K^(+)` are absorbed and `3Na^(+)` are pumped out

Text Solution

Verified by Experts

The correct Answer is:
A
Energy from ATP cause conformational change in the solute carrier complex. From energy of one ATP, `3Na^(+)` are pumped outside and two `K^(+)` are taken in. This process of expelling out `Na^(+)` ions and drawing in `K^(+)` ions aginst the concentration gradient and exchange pump of the cell.

This pump operates by involving the `Na^(+)-K^(+)-` ATP ase enzyme located in the cell membrane. Such membrane and negative charge to cell's interior. This difference in charge on either side of the membrane of a resting neuron is the resting membrane potential.
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