Why are sodium potassium pumps important? Also, is it a form of active or passive transport?

Sodium is constantly diffused into the cell which causes it to dehydrate. these pumps take out the access sodium molucules. -potassium is needed in high count in the cell to help transport other molecules -1.three sodium ions bind to the transport pump. a phosphate group taken from atp is taken along with it to provide energy. 2. the pump changes shape and transports the 3 sodium ions to the outside of the cell 3. two potassium ions from the ouside of the cell bind to the pump. the phosphate group is released giving the pump energy to change shape towards the inside of the cell. 4. the pump transports the potassium ions across the cell membrane and releases them into the cell -sodium potassium pumps are a form of active transport because they require enery to transport the ion agains the concentration gradient to move from low concentration to higher concentration.