Ch 21 Immune

  1. In clonal selection of B cells which substance is responsible for determine which cells will eventually become cloned? 

    C) antigen
  2. Which of the following is true about the number of binding sites per functional antibody unit?

    C) IgM contains 10 binding sites
  3. Cytotoxic T cell ___.

    C) are the only T cells that can directly attack and kill other cells
  4. Which of the following is NOT a mechanism for development of autoimmune disorders?

    C) a second exposure to an allergen
  5. Natural killer cells ____

    D) can kill cancer cells before the immune system is activated
  6. Which of the following is FALSE?

    D) Class II MHC molecules appear on the surface of antigen presenting cells...
  7. Which of the following would be classified as a delayed hypersensitivity reaction?

    B) allergic contact dermatitis
  8. Small molecules that bind with self-proteins to produce antigenic substances are called ____.

    A) haptens
  9. Delayed hypersensitivities _____.

    C) include allergic contact dermatitis
  10. Antibody functions include all of the following EXCEPT _____.

    C) cross linking cell bound antigens on RBC...
  11. Which of the following does NOT respond to cell mediated immunity?

    D) pathogens in the CNS
  12. Correct sequence of events for phagocytosis?

  13. Which of the following is true of immediate hypersensitivities?

    A) involve IgE antibodies and release of histamine...
  14. ______ are released by activated T cells and macrophages to mobilize immune cells and attract other leukocytes into the area.

    A) Cytokines
  15. What is the ole of interferon in defense against disease?

    A) protect cells that have not yet been infected by VIRUS
  16. Which of the following is part of the second line of defense against microorganisms?

    D) phagocytes
  17. Which of the following is NOT a type of T cell?

    D) antigenic
  18. The primary immune response _______.

    A) has a lag period while B cells proliferate and differentiate into plasma cells
  19. Regulatory T cells ______.

    A) may function in preventing autoimmune reactions
  20. Innate immune system defenses include ______.

    C) phagocytosis
  21. Which statement is TRUE about T cells?

    D) Their proliferation is enhanced by interleukins 1 and 2
  22. Select the correct statement about immunodeficiency.

    C) the causative agent in AIDS is a virus that recognizes CD4 proteins
  23. _______ predominate at the sites of chronic infections.

    B) macrophages
  24. Clonal selection of  B cells ____.

    D) results in formation of plasma cells
  25. Select the correct statement about active and passive immunity.

    C) Active and passive humoral immunity....
  26. Interferons ___.

    C) interfere with viral replication within cells
  27. Select the correct statement about function of antibodies.

    D) Complement fixation is the main mechanism by which antibodies provide protection
  28. Which of the following is NOT a method by which antibodies work?

    C) activating cytokines
  29. Fever ______.

    A) production is regulated by chemicals that reset the body's thermostat to a higher setting
  30. B Lymphocytes develop immunocompetence in the ____.

    D) bone marrow
  31. Graft rejection may be caused by ___.

    D) xenograft
  32. Which of the following statement about NK cells is FALSE?

    D) type of neutrophil
  33. Which of the following does NOT describe antigens?

    B) only come from microbes
  34. Select the correct statement about antigens?

    D) one antigen may have many different determinants
  35. Phagocyte mobilization involves _____.

    B) mainly neutrophil and macrophage migration into inflamed areas
  36. Which of the following is characteristic of complete antigens?

    D) reactivity with an antibody
  37. Which of the following is associated with passive immunity?

    A) passive IgG antibodies from a pregnancy mother to fetus
  38. Toll like receptors trigger the release of ___ to attract WBCs to the scene. 

    C) cytokines
  39. Which of the following is not a function of the inflammatory response?

    C) replace injured tissues with connective tissue
  40. Which of the following is FALSE?

    C) after becoming immunocompetent the naive T and B cells are exported to bone marrow
  41. Complement proteins and antibodies coat a microorganism and provide binding sites....

    D) opsonization
  42. Which of the following cells is most critical cell in immunity?

    B) B cell
  43. B cells respond to initial antigen challenge by _____.

    A) producing progeny cells that include plasma and memory cells
  44. Select the correct statement about the prevention of immune attack on self.

    D) tolerance is developed during fetal life
  45. The antibody molecule is held together by ____ bonds.

    C) disulfide
  46. ______ determine what specific foreign substances our adaptive immune system will be able to recognize and resist.

    C) our genes
  47. Monoclonal antibodies are used for diagnosis of all of the following except ____.

    A) juvenile diabetes
  48. Which of the following is NOT an autoimmune disease?

    C) type II diabetes
  49. Redness and heat of an inflamed area are due to a local hyperemia caused by ______.

    A) vasodilation
  50. The only T cells that can directly attack and kill other cells are the ____.

    B) cytotoxic cells
  51. Helper T cells ____.

    C) function in adaptive immune system activation
  52. Immunocompetence ____.

    A) ability of individual cells to recognize a specific antigen
  53. Correct statement about complement.

    a) adaptive immune mechanism is involved...
    a) adaptive immune mechanism is involved...
Card Set
Ch 21 Immune
Ch 21 immune