Primary Active Transport [TOP]

ATP was a flashy, unstable little molecule with three phosphate groups trailing behind it like a lit fuse. It sidled up to Pump-O and whispered, “Need a spark?”

Pump-O just smiled. Or rather, he shifted his shape into something resembling a smile. Then he stomped his foot, signaling his true partner in crime: , the cell’s high-energy currency. primary active transport

Pump-O, now shaped like an open claw facing outward, had a new hunger: potassium. Two weary potassium ions, shivering in the cold exterior, saw the open binding sites and leaped in. ATP was a flashy, unstable little molecule with

Because in Cytoville, everyone knew the golden rule: Passive transport is a lazy river. But primary active transport? That’s a dragon breathing fire, moving mountains against the current, one expensive, beautiful, phosphate-powered twist at a time. Then he stomped his foot, signaling his true