Answer:
C ) Sodium ions out of the cell and potassium ions into the cell.
Explanation:
Sodium and potassium ions moves against concentration gradient.
Three sodium ions are exported and two potassium ions are imported, for every ATP that pump uses.
The sodium - potassium pumps help to maintain resting potential.
It also help to regulate the cellular volume
It also effects the transport.
It was discovered by Danish scientist Jens Christian in 1957.
He was awarded by Noble prize in 1997.
