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What Are Enzymes?• Most enzymes are Proteins (tertiary and quaternary structures)
• Act as Catalyst to accelerates a reaction
• Not permanentlychanged in the process
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Enzymes• Are specific for what they will catalyze
• Are Reusable• End in –ase-Sucrase-Lactase-Maltase
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Enzymes
FreeEnergy
Progress of the reaction
Reactants
Products
Free energy of activation
Without Enzyme
With Enzyme
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Enzyme-Substrate ComplexThe substance
(reactant) an enzyme acts on is the substrate
EnzymeSubstrate Joins
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Active Site• A restricted region of an enzyme
molecule which binds to the substrate.
EnzymeSubstrate
Active Site
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