Immunogenetics: Structure of Lymphocyte Antigen Receptors
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Questions and Answers

What type of antigens can membrane-bound antibodies of B lymphocytes recognize?

  • Only peptides bound to MHC molecules
  • Only lipids
  • Only proteins
  • Many types of chemical structures (correct)

    • What do the antigen receptors of B and T lymphocytes have in common?

  • Transmit biochemical signals that are fundamentally the same (correct)
  • Function as membrane receptors and secreted proteins
  • Expressed as secreted proteins
  • Recognize only peptides bound to MHC molecules

    • What is unique about the function of T cell antigen receptors (TCRs) compared to antibodies (immunoglobulins)?

  • Antibodies are secreted proteins
  • Antibodies can recognize diverse antigens
  • TCRs only function as membrane receptors (correct)
  • TCRs can bind to lipids

    • How do most T cell antigen receptors recognize antigens?

    <p>Only peptides bound to major histocompatibility complex (MHC) molecules</p> Signup and view all the answers

    What is essential for signaling in lymphocytes, despite single antigens being shown in recognition?

    <p>Binding of two or more receptors to adjacent antigen molecules</p> Signup and view all the answers

    What is a critical characteristic of membrane-bound antibodies serving as B lymphocyte antigen receptors?

    <p>Ability to recognize many types of chemical structures</p> Signup and view all the answers

    What is the principal function of cellular receptors in the immune system?

    <p>Triggering responses of the cells</p> Signup and view all the answers

    Why do antigen receptors of lymphocytes need to be able to bind to and distinguish between many different chemical structures?

    <p>To recognize a large variety of different antigens</p> Signup and view all the answers

    Which type of receptors do B lymphocytes express to recognize antigens?

    <p>Membrane-bound antibodies</p> Signup and view all the answers

    Why are antigen receptors considered clonally distributed in lymphocytes?

    <p>To ensure each clone is specific for a distinct antigen</p> Signup and view all the answers

    What makes up the immune repertoire?

    <p>The total number of distinct lymphocyte clones</p> Signup and view all the answers

    In adaptive immunity, what do effector T cells and antibodies recognize to perform their functions?

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

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