Immune System: Exam 2

58 Questions | Total Attempts: 376

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Immune System Quizzes & Trivia

Exam 2 -- Quiz 2


Questions and Answers
  • 1. 
    Which of the following is characteristic of antibodies?
    • A. 

      Carbohydrate structure

    • B. 

      Three binding sites per antibody monomer

    • C. 

      Composed of heavy and light polypeptide chains

    • D. 

      Incapable of being transferred from one person to another

  • 2. 
    Which of the following is associated with passive immunity?
    • A. 

      Exposure to an antigen

    • B. 

      Booster shot of vaccine

    • C. 

      Infusion of weakened viruses

    • D. 

      Passage of IgG antibodies from a pregnant mother to her fetus

  • 3. 
    Which of the following is not a type of T cell?
    • A. 

      Helper

    • B. 

      Regulatory

    • C. 

      Antigenic

    • D. 

      Cytotoxic

  • 4. 
    B lymphocytes develop immunocompetence in the ____________________________.
    • A. 

      Bone marrow

    • B. 

      Spleen

    • C. 

      Lymph nodes

    • D. 

      Thymus

  • 5. 
    Which of the following is not a function of the inflammatory response?
    • A. 

      Sets the stage for repair processes

    • B. 

      Replaces injured tissues with connective tissue

    • C. 

      Disposes of cellular debris and pathogens

    • D. 

      Prevents the spread of the injurious agent to nearby tissue

  • 6. 
    The redness and heat of an inflamed area are due to a local hyperemia caused by __________________________.
    • A. 

      Production of complement and interferon

    • B. 

      Vasodilation

    • C. 

      Vasoconstriction

    • D. 

      Phagocyte mobilization

  • 7. 
    The antibody molecule is held together by ____________________ bonds.
    • A. 

      Hydrogen

    • B. 

      Amino acid

    • C. 

      Sodium

    • D. 

      Disulfide

  • 8. 
    In clonal selection of B cells, which substance is responsible for determining which cells will eventually become cloned?
    • A. 

      Complement

    • B. 

      Antibody

    • C. 

      Antigen

    • D. 

      Interferon

  • 9. 
    Which of the following statements regarding NK cells is a false or incorrect statement?
    • A. 

      NK cells attack cells that display abnormal MHC antigens

    • B. 

      NK cells attack cancer cells and virus-infected body cells

    • C. 

      NK cells are a type of neutrophil

    • D. 

      NK cells are present in the blood, spleen, lymph nodes, and red bone marrow

  • 10. 
    The process whereby neutrophils and other white blood cells are attracted to an inflammatory site is called ________________________.
    • A. 

      Margination

    • B. 

      Phagocytosis

    • C. 

      Chemotaxis

    • D. 

      Diapedesis

  • 11. 
    Small molecules that bind with self-proteins to produce antigenic substances are called ____________________.
    • A. 

      Antibodies

    • B. 

      Reagins

    • C. 

      Ions

    • D. 

      Haptens

  • 12. 
    Which of the following is the correct sequence of events in phagocytosis?
    • A. 

      Ingestion, adherence, chemotaxis, digestion, killing

    • B. 

      Chemotaxis, ingestion, digestion, adherence, killing

    • C. 

      Adherence, digestion, killing, ingestion, chemotaxis

    • D. 

      Chemotaxis, adherence, ingestion, digestion, killing

  • 13. 
    The only T cells that can directly attack and kill other cells are the ________________.
    • A. 

      Cytotoxic cells

    • B. 

      Regulatory cells

    • C. 

      Helper cells

    • D. 

      Plasma cells

  • 14. 
    Which of the following does not respond to cell-mediated immunity?
    • A. 

      Intracellular pathogens that reside within host cells

    • B. 

      Pathogens in the CNS

    • C. 

      Foreign tissue transplants

    • D. 

      Some cancer cells

  • 15. 
    ____________________________ predominate at the sites of chronic infections.
    • A. 

      B cells

    • B. 

      Eosinophils

    • C. 

      Basophils

    • D. 

      Macrophages

  • 16. 
    Interferons _____________________________________.
    • A. 

      Interfere with viral replication within cells

    • B. 

      Are routinely used in nasal sprays for the common cold

    • C. 

      Are virus-specific, so that an interferon produced against one virus could not protect cells against another virus

    • D. 

      Act by increasing the rate of cell division

  • 17. 
    ____________________ determine(s) what specific foreign substances our adaptive immune system will be able to recognize and resist.
    • A. 

      The type of antigen

    • B. 

      Our genes

    • C. 

      Enzymes present at the time of the invasion

    • D. 

      Memory cell production

  • 18. 
    Regulatory T cells ___________________________________.
    • A. 

      Are the most thoroughly understood T cells

    • B. 

      May function in preventing autoimmune reactions

    • C. 

      Release cytokines that increase the activity of cytotoxic T cells and activated B cells

    • D. 

      Decrease their activity as antigenic stimulus decreases

  • 19. 
    Select the correct definition about tissue grafts.
    • A. 

      Xenografts are between individuals of the same species.

    • B. 

      Autografts are between two genetically identical individuals

    • C. 

      Isografts are between identical twins

    • D. 

      Allografts are between different species

  • 20. 
    Which of the statements below does not describe antigens?
    • A. 

      Antigens can include proteins, nucleic acids, lipoproteins, glycoproteins, and certain large polysaccharides

    • B. 

      Antigens exhibit immunogenicity and reactivity

    • C. 

      Antigens only come from microbes

    • D. 

      The parts of antigen molecules that initiate immune responses are called epitopes or antigenic determinants

  • 21. 
    ________________________ are released by activated T cells and macrophages to mobilize immune cells and attract other leukocytes into the area.
    • A. 

      Interleukin 1 proteins

    • B. 

      Interleukin 2 proteins

    • C. 

      Cytokines

    • D. 

      Perforins

  • 22. 
    Which of the following is a part of the second line of defense against microorganisms?
    • A. 

      Cilia

    • B. 

      Gastric juice

    • C. 

      Phagocytes

    • D. 

      Keratin

  • 23. 
    Which of the following is characteristic of complete antigens?
    • A. 

      Contain many repeating chemical units

    • B. 

      Small molecules

    • C. 

      Reactivity with an antibody

    • D. 

      Inhibit production of antibodies

  • 24. 
    B cells respond to the initial antigen challenge by ____________________________.
    • A. 

      Immediately producing antigen-specific antibodies

    • B. 

      Reducing its size

    • C. 

      Forming of a large number of cells that are unlike the original B cell

    • D. 

      Producing progeny cells that include plasma cells and memory cells

  • 25. 
    Graft rejection may be caused by _____________________.
    • A. 

      Total body irradiation

    • B. 

      Using a xenograft

    • C. 

      Treatment with anti lymphocyte serum

    • D. 

      Use of immunosuppressive drugs

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