The virtual enzyme The virtual enzyme Enzymes are the tools of life. They do almost everything in a cell. Virtually every one of life s chemical reactions is driven by some enzyme.
Enzymes are organic catalysts that work like a starter on a car.
With a small input of energy from the starter, a car can run on its own energy all day. Enzymes are not used up or changed when they jumpstart another molecule. They can perform the same task over and over. Enzymes work very fast. They can carry out their task thousands of times per second.