Biochem: Week 6 lecture
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Questions and Answers

In the induced-fit model of enzyme-substrate binding, what can change shape when the enzyme and substrate bind?

  • Ezyme
  • Substrate
  • Both the enzyme and substrate (correct)
  • Neither the enzyme or substrate

    • What does the enzyme lactase do?

  • Catalyses lactose phosphorylation
  • Catalyses the addition of lactose functional groups to form a double bond
  • Breaks down lactose into simple sugars (correct)
  • All of the above

    • Which of the following statements about the irreversible inhibitor Diisopropyl fluorophosphate (DFP) is true?

  • DFP is an organic phosphate that activates serine proteases
  • DFP is an organophosphorus inhibitor
  • DFP reacts with the active lysine site of chymotrypsin to form DFP-chymotrypsin (correct)
  • DFP is toxic because it can inhibit epinephrine

    • How do noncompetitive inhibitors affect enzyme kinetics?

    <p>Increase Vmax and Km does not change</p> Signup and view all the answers

    Which of the following is not an example of a competitive inhibitor?

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

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