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 (B)</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 (A)</p> Signup and view all the answers

What affects the velocity of a chemical reaction?

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

What must molecules have to react in a transition state?

<p>High energy (B)</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 (A)</p> Signup and view all the answers

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