The sodium-potassium pump is:

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(C) The sodium-potassium pump is a transmembrane protein complex that actively transports ions across the cell membrane.It functions as a carrier prot

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$A$ protein carrier

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(C) The sodium-potassium pump is a transmembrane protein complex that actively transports ions across the cell membrane.It functions as a carrier protein that uses energy from $ATP$ hydrolysis to move $3$ $Na^+$ ions out of the cell and $2$ $K^+$ ions into the cell against their respective concentration gradients.Therefore,it is classified as a protein carrier (specifically an ion pump).

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