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Enzymes Introduction - Enzymes are proteins - Enzymes speed up the rate of chemical reactions - All enzymes end in –ASE - Example: amylASE is an enzyme Energy Hill Diagram Definitions Substrate = material on which an enzyme acts Active Site = point at which a chemical reaction occurs between an enzyme and substrate Activation Energy = energy needed to get a reaction started - Enzymes LOWER the amount of energy needed for a chemical Reaction Inhibitor = molecule that binds to an enzyme and decreases its activity
