True/False
Indicate whether the statement is true or
false.
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1.
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The maturation of T lymphocytes occurs in the bone marrow.
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2.
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Cytotoxic T cells are the only T cells that directly attack and kill
pathogens.
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3.
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Allergic reactons are caused by inappropriate responses by the immune system to
nonpathogenic antigens.
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4.
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The major role of antigen-presenting cells in immunity is to engulf antigens and
then present fragments of these antigens, like signal flags, on their own surfaces where they can be
recognized by T cells.
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5.
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A mild fever may be beneficial in fighting an infection.
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6.
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Reverse transcriptase inhibitors work by stopping the manufactured viral
proteins from assembling into new viruses.
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7.
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Helper T cells are responsible for the activation of killer T cells and B
cells.
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Multiple Choice
Identify the choice that best completes the
statement or answers the question.
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8.
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Which of the following is NOT one of the nonspecific defenses?
a. | antibody agglutination | c. | stomach acidity | b. | complement fixation | d. | antimicrobial enzymes in sweat and
tears |
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9.
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When lymphocytes clone they produce:
a. | alpha and beta cells | c. | memory cells and active cells | b. | antigen presenting
cells and killer cells | d. | T
cells and antibodies |
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10.
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Which of the following is NOT a characteristic of inflammation?
a. | swelling | c. | increased capillary permeability | b. | redness | d. | all
of the above are characteristics |
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11.
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Vaccinations are example of:
a. | naturally aquired immunity | c. | artificially aquired
immunity | b. | passive immunity | d. | nonspecific immunity |
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12.
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These cells are the main mediators of allergic responses.
a. | neutrophils | d. | T cells | b. | macrophages | e. | eosinophils | c. | B
cells |
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13.
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Which of the following is NOT a lymphatic organ?
a. | tonsil | d. | thymus | b. | spleen | e. | all of the above are lymphatic
organs | c. | lymph node |
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14.
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The lymphatic organ that screens blood for pathogens is:
a. | spleen | c. | tonsils | b. | lymph nodes | d. | appendix |
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15.
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Vaccinations depend on the production of
in order to provide immunity.
a. | killer T cells | c. | antibodies | b. | memory cells | d. | interferon |
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16.
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The immune system cell that requires an introduction to it's antigen by an
antigen presenting cell is the:
a. | B cell | c. | neutrophil | b. | macrophage | d. | T cell |
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17.
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Select the correct statement about lymphocytes.
a. | B cells produce plasma cells, which secrete antibodies into the blood | c. | T cells are the
precursors of B cells | b. | T cells are the only form of lymphocyte found
in lymph nodes | d. | the two main
types are T cells and macrophages |
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18.
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Which of the following is NOT generally considered a defense mechanism against
disease?
a. | fever | c. | ATP synthesis | b. | intact skin | d. | phagocytosis |
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19.
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The virally infected cell:
a. | produces complement to help other cells guard against infection | c. | usually dies before
the virus has a chance to replicate | b. | produces histamines that initiate
complement | d. | produces
interferon to help other cells guard against infection |
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20.
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Which leukocyte is most numerous in a normal person’s system?
a. | basophil | d. | neutrophil | b. | monocyte | e. | eosinophil | c. | lymphocyte |
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21.
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The secondary response to an infection is:
a. | faster than the primary response | d. | less than the primary
response | b. | slower than the primary response | e. | both a and c | c. | greater than the
primary response |
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22.
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Which of the following is a first line defense against viral infection?
a. | phagocytosis of virus by macrophages | c. | cloning of T cells in response to
exposure to virus | b. | recognition of viral antigens by B
cells | d. | mucus that traps
virus and moves it out of respiratory tract |
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23.
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Which of the following describes a virus?
a. | a unicellular organsim with cell walls | c. | infectious
protein | b. | a multicellular organism that parasitizes humans | d. | infectious agents containing nucleic
acids |
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24.
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Which cell is targeted by the HIV virus?
a. | macrophage | c. | helper T cell | b. | B cell | d. | supressor T
cell |
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25.
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The cells that engulf bacteria, viruses and other pathogens are known as:
a. | T lymphocytes | c. | B lymphocytes | b. | macrophages | d. | eosinophils |
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26.
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Which of the following Gilead formulations contains a three drug
“cocktail” to combat HIV?
a. | Emtriva | c. | Atripla | b. | Truvada | d. | Viread |
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27.
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In the viral lifecycle of HIV, the virus enters the host cell by:
a. | diffusion through the phospholipid bilayer | c. | exocytosis | b. | injection of its
nucleic acids into the cytoplasm | d. | endocytosis |
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Matching
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Match the Phase of HIV infection with the following characteristics a. | phase I | c. | phase III | b. | phase II |
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28.
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patient experiences full blown AIDS with many opportunistic infections and
cancers
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29.
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patient may be symptomless, but T cell count is declining, this is the phase
that HAART can extend
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30.
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initial infection occurs, patient may experience flu-like symptoms
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