The process of the plasma membrane pumping excess sodium out of a cell into an environment where there is a lower concentration of sodium is called .

Active transport

Explanation:

The process of the plasma membrane pumping excess sodium out of a cell into an environment where there is a lower concentration of sodium is called active transport

Active transport drives the transportation of solute against the concentration gradient across the membraneIt includes two types of transport: primary active transport and secondary active transportTransport of sodium occurs through primary active transportPrimary active transport catalyzes direct hydrolysis of ATP during solute transportation called ATPase

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