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Enzymes

Enzymes. Chemical reactions. Chemically change substances Reactant – goes into the reaction Product – goes out of the reaction. Enzymes. Activation energy is the energy needed to start a reaction Catalysts are substances that “jump-start” a reaction

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Enzymes

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  1. Enzymes

  2. Chemical reactions • Chemically change substances • Reactant – goes into the reaction • Product – goes out of the reaction

  3. Enzymes • Activation energy is the energy needed to start a reaction • Catalysts are substances that “jump-start” a reaction • Biological catalysts are known as enzymes

  4. Activation Energy

  5. Enzymes • Are made of proteins • Has a site where the substrate can be brought together to react (called the active site) • Changes in pH and temperature can affect the shape of enzymes • A substrate is a reactant for enzymes

  6. Enzyme-Substrate Complex

  7. Denatured Enzymes • Enzymes are denatured when the active site changes shape due to changes in the pH or temperature

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