Enzymes and Energy Changes in Biological Reactions
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Questions and Answers

What do enzymes do to the activation energy of a biochemical reaction?

  • Have no effect on it
  • Decrease it (correct)
  • Create it
  • Increase it

    • What is the energy barrier separating the reactants and products in a chemical reaction called?

  • Enzyme barrier
  • Free energy of activation (correct)
  • Reactant barrier
  • Transition state energy

    • What type of molecules are most enzymes?

  • Lipids
  • Carbohydrates
  • Proteins (correct)
  • Nucleic acids

    • What do enzymes not change in a chemical reaction?

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

    What is the high-energy intermediate formed during the conversion of reactants to products called?

    <p>Transition state</p> Signup and view all the answers

    What affects the velocity of a chemical reaction?

    <p>Substrate concentration</p> Signup and view all the answers

    What must molecules have to react in a transition state?

    <p>High energy</p> Signup and view all the answers

    What does the lower free energy of activation indicate for a molecule?

    <p>More ability to pass through transition state</p> Signup and view all the answers

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