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1. Enzymes are organic catalysts in organisms. Why are they so important for sustaining life? 2. Explain how enzymes increase the rates of chemical

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©2014,CarolinaBiologicalSupplyCompany 1. Enzymes are organic catalysts in organisms. Why are they so important for sustaining life? 2. Explain how enzymes increase the rates of chemical reactions. 3. Explain the relationship between a substrate and an enzyme.
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1. a. What enzyme in cells and blood causes hydrogen peroxide to decompose? What are the products of this reaction? b. Which product provides visible evidence that the peroxide is reacting? 2. a. Draw a “lock and key” graphic for the enzyme catalase and the substrate hydrogen peroxide. Label the sequential steps, including the enzyme- substrate complex, and show how hydrogen peroxide is broken down into harmless products. b. What is the purpose of forming an enzyme-substrate complex? 3. Explain why a fever that persists at 42ºC (107.6ºF) is life threatening for a person.
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