Why do sodium ions enter a cell when gated sodium channels open?

Sodium and potassium ions moves against concentration gradient.

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.

i believe it is c.) 1575 j.

because of all the things that happen around the us, many people get into arguments which sadly could get physical, but we should actually make a change for that.