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Activation Energy and Chemical Reactions
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Activation Energy and Chemical Reactions

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@ProudDenver

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Questions and Answers

What happens to an enzyme's structure if it is exposed to slightly higher temperatures?

  • The enzyme becomes more efficient
  • The enzyme's active sites change shape
  • The hydrogen bonds may begin to break apart (correct)
  • The enzyme produces more substrates

    • Why is a very high fever dangerous to a person in relation to enzymes?

  • It has no effect on enzyme function
  • It stabilizes enzyme structure
  • It enhances enzyme activity
  • It can cause changes in enzyme structure, leading to loss of function (correct)

    • What is the specific term for the reactants that an enzyme acts on?

  • Substrates (correct)
  • Activators
  • Inhibitors
  • Reactives

    • How do substrates bind to enzymes?

    <p>Temporarily at specific active sites</p> Signup and view all the answers

    What is a catalyst in relation to chemical reactions?

    <p>A substance that decreases activation energy and increases reaction rate</p> Signup and view all the answers

    How does a change in pH affect enzymes?

    <p>It disrupts hydrogen bonds in enzymes</p> Signup and view all the answers

    What is activation energy in a chemical reaction often compared to?

    <p>Energy needed to push a rock up a hill</p> Signup and view all the answers

    How do enzymes affect chemical reactions in living things?

    <p>Decrease the activation energy</p> Signup and view all the answers

    What type of molecules are enzymes primarily composed of?

    <p>Proteins</p> Signup and view all the answers

    How do changes in temperature or pH affect enzyme function?

    <p>Inhibit enzyme function</p> Signup and view all the answers

    What do enzymes act as in chemical reactions within organisms?

    <p>Catalysts</p> Signup and view all the answers

    Why do chemical reactions in organisms often require catalysts like enzymes?

    <p>To maintain the reaction rate at organism's body temperature</p> Signup and view all the answers

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