Enzymes Catalysis Strategies Quiz
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Questions and Answers

What is the distinguishing feature of uncompetitive inhibition?

  • Inhibitor binds to the active site of enzyme
  • Adding more substrate relieves inhibition
  • Inhibitor binds only to enzyme-substrate complex (correct)
  • Inhibitor is similar in structure to substrate
  • How does competitive inhibition affect Vmax and KM?

  • Vmax decreases, KM decreases
  • Vmax remains the same, KM increases (correct)
  • Vmax increases, KM remains the same
  • Vmax decreases, KM remains the same
  • Which type of irreversible inhibitors involves the formation of a reactive intermediate that covalently modifies the enzyme?

  • Affinity Labels
  • Group-Specific Reagents
  • Transition-state Analogs
  • Suicide Inhibitors (correct)
  • What is a key characteristic of transition-state analogs as irreversible inhibitors of enzymes?

    <p>They bind tighter to prevent substrate binding</p> Signup and view all the answers

    Which type of reversible inhibitor is more specific for an enzyme's active site compared to group-specific reagents?

    <p>Affinity Labels</p> Signup and view all the answers

    Which strategy involves a molecule other than water playing the role of a proton donor or proton acceptor?

    <p>General Acid-Base Catalysis</p> Signup and view all the answers

    What type of catalysis involves the active site containing a reactive group that becomes temporarily modified covalently during the catalytic reaction?

    <p>Covalent Catalysis</p> Signup and view all the answers

    Which strategy involves stabilizing negative charge on a reaction intermediate using a metal ion?

    <p>Metal Ion Catalysis</p> Signup and view all the answers

    What factor enhances the rate of enzyme-catalyzed reactions by increasing the chances of interactions between enzyme and substrate?

    <p>Increased temperature</p> Signup and view all the answers

    Which statement is true about enzyme inhibition?

    <p>Reversible inhibition involves rapid dissociation of enzyme-inhibitor complex</p> Signup and view all the answers

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