Question

What is active transport? Provide 2 examples of active transport. (two sentences)

Answer 1

Active transport is a biological process that moves ions or molecules across cell membranes against their concentration gradient, requiring energy input, usually in the form of ATP. Two examples of active transport are the sodium-potassium pump, which moves sodium ions out of and potassium ions into the cell, and the proton pump, which transports protons across the membrane to help maintain pH and membrane potential.