Enzymes as Bioreceptor Molecules in Biosensor Applications
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Questions and Answers

What is the main reason enzymes are chosen for biosensors?

  • Enzymes are natural proteins that catalyze a specific substrate (correct)
  • Enzymes are easily integrated with different transduction mechanisms
  • Enzymes are cheap to produce
  • Enzymes are highly reactive and can detect a wide range of analytes
  • How do enzymes recognize their target analyte in a biosensor?

  • Enzymes recognize their target analyte through random collisions
  • Enzymes recognize their target analyte through a lock-and-key mechanism (correct)
  • Enzymes recognize their target analyte through a complex signaling pathway
  • Enzymes recognize their target analyte through non-specific interactions
  • What are the main advantages of using enzymes as bioreceptors in biosensors?

  • Enzymes are cheap, fast, and can detect a wide range of analytes
  • Enzymes are easy to immobilize, stable, and have a long shelf-life
  • Enzymes are highly selective, sensitive, and can be combined with different transduction mechanisms (correct)
  • Enzymes are natural, renewable, and environmentally friendly
  • What are the three main mechanisms of operation of enzyme-based bioreceptors in biosensors?

    <p>Conversion of the analyte, detection of analyte inhibition/activation, and modification of enzyme properties</p> Signup and view all the answers

    How do enzymes compare to chemical reactions in biosensors?

    <p>Enzymes are more selective, sensitive, and faster acting than chemical reactions</p> Signup and view all the answers

    What is the primary advantage of using enzymes as bioreceptors in biosensors?

    <p>They have specific binding capabilities and catalytic activity.</p> Signup and view all the answers

    Which of the following statements about enzyme structure is true?

    <p>Some enzymes require only their amino acid residues for activity.</p> Signup and view all the answers

    What happens to an enzyme's catalytic activity if its native protein conformation is disrupted?

    <p>The catalytic activity is destroyed.</p> Signup and view all the answers

    What is the purpose of using enzyme-coupled receptors in biosensors?

    <p>To modify the recognition mechanisms of the biosensor.</p> Signup and view all the answers

    Which of the following statements about enzyme cascades is true?

    <p>They are often used to enhance the enzymatic activity.</p> Signup and view all the answers

    Which of the following components can act as a cofactor for an enzyme?

    <p>Inorganic ions like $Fe^{2+}$, $Mg^{2+}$, $Mn^{2+}$, or $Zn^{2+}$</p> Signup and view all the answers

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