What is the name of the membrane transport proteins which primary function is to create and maintain a chemical gradient across the cell membrane's

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Pumps are membrane transport proteins that use energy to move molecules against their concentration gradient, creating a chemical gradient across the cell membrane. Ion channels are membrane transport proteins that allow ions to move down their concentration gradient, but they do not actively create a gradient. Symporters and secondary active transport proteins also use energy to move molecules, but their primary function is not to create or maintain a chemical gradient.

What Is the Name of the Membrane Transport Proteins Which