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Animation Cell-Mediated Immunity
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Animation Cell-Mediated Immunity

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Questions and Answers

What is the initial step in the Antibody-Mediated Immune Response?

  • Activation of B cells by specific antigen (correct)
  • Activation of Helper T cells by specific antigen
  • Formation of antigen-antibody complex
  • Secretion of antibodies by plasma cells
  • Which type of cells undergo clonal selection into plasma cells and memory B cells?

  • T cells
  • Antigen-presenting cells
  • Helper T cells
  • B cells (correct)
  • What is the main function of plasma cells in the immune response?

  • Activation of B cells
  • Costimulation of Helper T cells
  • Formation of antigen-antibody complex
  • Production of antibodies specific to antigens (correct)
  • Which class of antibodies is involved in Type I hypersensitivity reactions such as allergies?

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

    What is the role of costimulation by Helper T cell cytokine in the Antibody-Mediated Immune Response?

    <p>Producing a more intense response in B cells</p> Signup and view all the answers

    Which type of cells can respond to unprocessed antigens in the immune response?

    <p>B cells</p> Signup and view all the answers

    What is the main function of antibodies in immobilizing bacteria?

    <p>Connect bacteria to each other, facilitating phagocytosis</p> Signup and view all the answers

    How do antibodies enhance phagocytosis?

    <p>Attract phagocytes to antigen-antibody complex</p> Signup and view all the answers

    In the secondary immune response, what triggers a greater antibody level in the blood?

    <p>Activation of memory cells from subsequent exposure to the same antigen</p> Signup and view all the answers

    What is the primary function of antibodies in activating the complement system plasma proteins?

    <p>Neutralize the antigen</p> Signup and view all the answers

    What initiates the immune response in the primary response to an antigen?

    <p>Immune response triggered by first exposure to specific antigen</p> Signup and view all the answers

    How does the basis for immunization by vaccination work?

    <p>Triggering memory cell clonal selection to antigen without causing illness</p> Signup and view all the answers

    What is the main function of plasma cells in the immune system?

    <p>Produce and secrete specific antibodies</p> Signup and view all the answers

    Which type of immunity is mainly effective against extracellular pathogens like viruses, bacteria, and fungi?

    <p>Antibody-mediated immunity</p> Signup and view all the answers

    What happens when activated B cells transform into plasma cells?

    <p>They synthesize and secrete specific antibodies</p> Signup and view all the answers

    In the immune response, what is the role of memory B cells?

    <p>Provide long-term immunity upon re-exposure to antigens</p> Signup and view all the answers

    Which cells from the clone of lymphocytes differentiate to carry out the immune response by destroying or inactivating antigen-bearing substances?

    <p>Effector cells</p> Signup and view all the answers

    What kind of immune response do activated B cells transform into plasma cells generate?

    <p>Antibody-mediated immunity</p> Signup and view all the answers

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