How well do you know the diversity of lymphocyte repertoires?
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Questions and Answers

Which of the following best describes the specificity of the adaptive immune system?

  • It can distinguish only a few antigens
  • It can distinguish antigens only after exposure
  • It cannot distinguish antigens at all
  • It can distinguish millions of different antigens (correct)

    • What is the lymphocyte repertoire?

  • The total population of B and T lymphocytes (correct)
  • A type of antigen receptor
  • A group of immune cells that attack the body's own tissues
  • A collection of antigens

    • What is a lymphocyte clone?

  • A group of cells that attack self antigens
  • A group of different lymphocyte populations
  • A group of cells derived from one lymphocyte
  • A group of cells with identical antigen receptors (correct)

    • What is the clonal selection hypothesis?

    <p>The idea that lymphocytes of a specific clone are selected and activated by an antigen</p> Signup and view all the answers

    What is the diversity of the lymphocyte repertoire?

    <p>It enables the immune system to respond to a vast number and variety of antigens</p> Signup and view all the answers

    What is an antigen-specific clone?

    <p>A unique lymphocyte that recognizes a single antigen and its progeny</p> Signup and view all the answers

    What is immunologic memory?

    <p>The ability of the immune system to remember every encounter with antigen</p> Signup and view all the answers

    What is immunological tolerance?

    <p>The ability of the immune system to coexist with potentially antigenic self molecules, cells, and tissues</p> Signup and view all the answers

    What is the total number of lymphocytes that can recognize and react against any one antigen?

    <p>Approximately 1,000 to 10,000 cells</p> Signup and view all the answers

    What is the clonal expansion of lymphocytes?

    <p>The marked expansion of the clone of lymphocytes specific for any antigen upon exposure to that antigen</p> Signup and view all the answers

    What is the property of adaptive immunity that enables it to respond to a vast number and variety of antigens?

    <p>Lymphocyte diversity</p> Signup and view all the answers

    What is the feature of adaptive immune responses that enables the immune system to remember every encounter with antigen?

    <p>Immunologic memory</p> Signup and view all the answers

    What is the response to the first exposure to antigen called?

    <p>Primary response</p> Signup and view all the answers

    Which of the following best describes the specificity of the adaptive immune system?

    <p>It can distinguish millions of different antigens</p> Signup and view all the answers

    What is the lymphocyte repertoire?

    <p>The total population of B and T lymphocytes</p> Signup and view all the answers

    What is a lymphocyte clone?

    <p>A group of cells with identical antigen receptors</p> Signup and view all the answers

    What is the clonal selection hypothesis?

    <p>The idea that lymphocytes of a specific clone are selected and activated by an antigen</p> Signup and view all the answers

    What is the diversity of the lymphocyte repertoire?

    <p>It enables the immune system to respond to a vast number and variety of antigens</p> Signup and view all the answers

    What is an antigen-specific clone?

    <p>A unique lymphocyte that recognizes a single antigen and its progeny</p> Signup and view all the answers

    What is immunologic memory?

    <p>The ability of the immune system to remember every encounter with antigen</p> Signup and view all the answers

    What is immunological tolerance?

    <p>The ability of the immune system to coexist with potentially antigenic self molecules, cells, and tissues</p> Signup and view all the answers

    What is the total number of lymphocytes that can recognize and react against any one antigen?

    <p>Approximately 1,000 to 10,000 cells</p> Signup and view all the answers

    What is the clonal expansion of lymphocytes?

    <p>The marked expansion of the clone of lymphocytes specific for any antigen upon exposure to that antigen</p> Signup and view all the answers

    What is the property of adaptive immunity that enables it to respond to a vast number and variety of antigens?

    <p>Lymphocyte diversity</p> Signup and view all the answers

    What is the feature of adaptive immune responses that enables the immune system to remember every encounter with antigen?

    <p>Immunologic memory</p> Signup and view all the answers

    What is the response to the first exposure to antigen called?

    <p>Primary response</p> Signup and view all the answers

    Which statement accurately describes the lymphocyte repertoire?

    <p>It distinguishes millions of different antigens</p> Signup and view all the answers

    What is the clonal selection hypothesis?

    <p>The development of clones of lymphocytes specific for different antigens before an encounter with these antigens</p> Signup and view all the answers

    What is the total number of lymphocytes that can recognize and react against any one antigen?

    <p>Approximately 1,000 to 10,000 cells</p> Signup and view all the answers

    What is the molecular basis for the diversity of lymphocytes?

    <p>The process of clonal deletion</p> Signup and view all the answers

    What is immunological memory?

    <p>The ability of the immune system to remember every encounter with antigen</p> Signup and view all the answers

    What is immunological tolerance?

    <p>The ability of the immune system to coexist with potentially antigenic self molecules, cells, and tissues</p> Signup and view all the answers

    What is the effectiveness of immune responses attributable to?

    <p>The selection and preservation of the most potent lymphocytes</p> Signup and view all the answers

    What is the lymphocyte repertoire?

    <p>A collection of lymphocytes with diverse antigen receptors</p> Signup and view all the answers

    What is the total population of B and T lymphocytes composed of?

    <p>Different clones of cells expressing different antigen receptors</p> Signup and view all the answers

    What is clonal deletion?

    <p>The process of eliminating lymphocytes that recognize self antigens</p> Signup and view all the answers

    What is the response to the first exposure to antigen called?

    <p>Primary immune response</p> Signup and view all the answers

    What is the ability of the immune system to react against a vast number and variety of microbes and other foreign antigens called?

    <p>Adaptive immunity</p> Signup and view all the answers

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