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The Internet changes how consumers shop and marketers market.
Symporter
is a type of transporter protein that moves two or more ions or molecules in the same direction across a cell membrane.
Plasma Membrane
The lipid bilayer membrane surrounding a cell, controlling the passage of substances in and out of the cell.
ATP-Powered Pumps
Membrane proteins that use the energy from ATP hydrolysis to transport ions or molecules across cell membranes against their concentration gradients.
Transport Proteins
Proteins that are involved in the movement of ions, small molecules, or macromolecules, such as nutrients and drugs across cell membranes.
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