Tetrapeptide and Antibodies
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Questions and Answers

What are the two larger peptide chains in an IgG molecule called?

  • Delta and Gamma chains
  • Kappa and Lambda chains
  • Heavy (H) chains and Light (L) chains (correct)
  • Alpha and Beta chains

    • Which Greek letter is used to denote the heavy chains of IgG?

  • Delta (δ)
  • Alpha (α)
  • Beta (β)
  • Gamma (γ) (correct)

    • What is the molecular weight of the heavy chains in an IgG molecule approximately?

  • 70,000
  • 35,000
  • 22,000
  • 50,000 (correct)

    • Which type of peptide chains can the light chains in an IgG molecule be?

    <p>Kappa (κ) chains or Lambda (λ) chains</p> Signup and view all the answers

    How do the kappa and lambda light chains differ?

    <p>By amino acid substitutions along their length</p> Signup and view all the answers

    What breaks the sulfhydryl bonds holding the heavy and light chains in an IgG molecule together?

    <p>Reductant like mercaptoethanol</p> Signup and view all the answers

    Which forces hold the heavy and light chains together in an IgG molecule?

    <p>Hydrogen bonds and Hydrophobic forces</p> Signup and view all the answers

    Which types of immunoglobulins can have both kappa and lambda light chains present?

    <p>IgG and IgM</p> Signup and view all the answers

    What is the main difference between kappa and lambda light chains?

    <p>Amino acid sequences</p> Signup and view all the answers

    Which type of peptide chain in an IgG molecule has a molecular weight of about 22,000?

    <p>Kappa (κ) chains</p> Signup and view all the answers

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