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5 Written Questions

5 Matching Questions

  1. Which of the following statements is incorrect or false?
  2. Which is mismatched?
  3. Which of the following is not a mechanism for the development of autoimmune disorders?
  4. T OR F: A given pathogen will provoke either a cell-mediated response or an antibody-mediated response but not both.
  5. An increase in white blood cell number at sites of injury, which is characteristic of inflammation, is called ______.
  1. a A SECOND EXPOSURE TO AN ALLERGEN;
    Mutation followed by the appearance of membrane proteins not previously present;
    Exposure of previously "hidden" self-antigens to the adaptive immune system;
    Cross-reaction of antibodies formed against foreign antigens with self-antigens
  2. b leukocytosis
  3. c AIDS: T helper cells are destroyed by a virus;
    Severe combined immunodeficiency syndrome (SCID): genetic defect resulting in a shortage of B and/or T cells;
    Multiple sclerosis: autoimmune disorder;
    IMMEDIATE HYPERSENSITIVITY: ALLERGIC CONTACT DERMATITIS
  4. d FALSE
  5. e CLASS II MHC MOLECULES APPEAR ONLY ON THE SURFACE OF ANTIGEN-PRESENTING CELLS, THYMIC CELLS, AND T CELLS THAT HAVE BEEN ACTIVATED BY EXPOSURE TO ANTIGENS;
    Class 1 MHC molecules are built into the plasma membranes of all body cells;
    Haptens lack immunogenicity unless attached to protein carriers;
    MHC proteins are the cell's identity markers.

5 Multiple Choice Questions

  1. FALSE
  2. T cells and B cells become fully immunocompetent when they bind with recognized antigens;
    The lymphoid organs where lymphocytes become immunocompetent are called primary lymph organs. All other lymphoid organs are referred to as secondary lymphoid organs;
    It is our genes, not antigens, that determine what specific foreign substances our immune system will be able to recognize and resist;
    AFTER BECOMING IMMUNOCOMPETENT, THE NAIVE T CELLS AND B CELLS ARE EXPORTED TO THE BONE MARROW WHERE THE ENCOUNTERS WITH ANTIGENS OCCUR
  3. mucus;
    lysozyme in tears;
    saliva;
    INTERFERON
  4. TRUE
  5. JUVENILE DIABETES;
    pregnancy;
    rabies;
    hepatitis

5 True/False Questions

  1. Which antimicrobial protein is produced by a virus-infected cell?interferon

          

  2. Which of the following is a part of the second line of defense against microorganisms?T CELLS;
    NK cells;
    inflammation;
    phagocytes

          

  3. Select the correct statement about active and passive immunity.Active and passive humoral immunity are both mechanisms of adaptive immunity that use antibodies.

          

  4. T OR F: Fever is seldom beneficial because it speeds up the cellular metabolic rate and will not allow antigen-antibody reactions to occur.FALSE

          

  5. Of the following classes of antibodies, which can cross the placenta?IgG

          

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