1. A PROTEIN that speeds up a biological reaction by lowering the activation energy; an example of a catalyst. 2.energy-requiring process by which atoms or groups of atoms in substances are changed into different substances.
3. A series of steps /actions that produce an end product
4. Minimum amount of energy needed for reactants to form products in a chemical reaction
5.Specific place where a substrate binds on an enzyme
6.substance that exists before a reaction occurs; found on the left side of the arrow in an equation
7.reactant to which an enzyme binds
8.Substance formed by a chemical reaction; found on the right side of the arrow in an equation
9. Any substance that speeds up a chemical reaction by lowering the activation energy.