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Enzymes

Enzymes. Chapter 6.3 page165. Enzyme Lab. Catalase Blood & Liver H 2 O 2 Toxic H 2 O 2 +catalase= H 2 O + O 2. Proteins Catalysts Speed reactions Work fast Denature at high temp. Properties of Enzymes. Enzyme-Substrate complex. Active site = where the substrate

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Enzymes

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  1. Enzymes Chapter 6.3 page165

  2. Enzyme Lab • Catalase • Blood & Liver • H2O2 • Toxic • H2O2 +catalase= • H2O + O2

  3. Proteins Catalysts Speed reactions Work fast Denature at high temp Properties of Enzymes

  4. Enzyme-Substrate complex Active site = where the substrate ( reaction molecule) connects to enzyme Active Site Substrate Enzyme

  5. Enzymes remain unchanged! Before • Enzymes are not used up • No more substrate = end to the reaction • Synthesis or Decomposition reactions After

  6. Lock & Key Model • One enzyme • for every substrate • unique fit Substrate Enzyme

  7. Enzymes are pH specific • Different enzymes • Different body areas • Different optimum pH • Examples: Stomach= acid pH Mouth= basic pH Blood Mouth Stomach

  8. Enzymes are temperature dependent…... • Most at body temperature • 37oC • Denature at high temperatures

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