111.  Which of the following is false?  
A.  The HIV virus binds to the CD4 molecule of host cells.
B.  There is currently only one cure for AIDS – AZT.
C.  Most manifestations of AIDS are explained by the loss of helper T cell functions.
D.  Once infected by the virus, a person will test positive for HIV antibodies.
E.  In order for HIV to replicate, viral RNA is used to make viral DNA, which is inserted into the host cell’s DNA.

112.  Several research groups are working on vaccines that will be effective against the AIDS virus. When a successful vaccine is produced, it is likely to be injected to produce  
A.  active natural immunity.
B.  active artificial immunity.
C.  passive natural immunity.
D.  passive artificial immunity.
E.  active passive immunity.

113.  A traditional method of providing temporary immunity for a person who is suspected of being infected (usually be an animal bite) with rabies is classified as  
A.  active natural immunity.
B.  active artificial immunity.
C.  passive natural immunity.
D.  passive artificial immunity.
E.  passive active immunity.

114.  Active natural immunity occurs when  
A.  antibodies pass from a pregnant mother to her fetus.
B.  antibodies are injected into a host.
C.  an individual develops a disease.
D.  a person is vaccinated.
E.  antibodies are passed in breast milk.

115.  Transfusing a person with plasma proteins from a person or an animal that has been actively immunized against a specific antigen provides  
A.  active immunity.
B.  passive immunity.
C.  no immunity.
D.  autoimmunity.
E.  natural immunity.

116.  If you receive an immunization for hepatitis B and produce antibodies against the hepatitis B virus, you have developed what type of adaptive immunity?  
A.  active natural immunity
B.  active artificial immunity
C.  passive natural immunity
D.  passive artificial immunity
E.  active passive immunity

117.  The type of adaptive immunity that provides immediate protection against disease when there is no time for the person to develop their own immunity is called _____ immunity.  
A.  active natural
B.  active artificial
C.  passive innate
D.  passive artificial
E.  active immediate

118.  A child is born with a congenital disease that results in total loss of B cells. Which of the following would be a consequence of this immunodeficiency?  
A.  no lymphokine production
B.  lack of antibody formation
C.  nonfunctioning complement system
D.  inability to form any type of memory cell
E.  no antigens on the cells

119.  An abnormal, exaggerated response of the immune system is called  
A.  immunization.
B.  an innate immune response.
C.  hypersensitivity.
D.  excess immunity.
E.  tolerance.

120.  In immunodeficiency diseases,  
A.  the immune system fails to distinguish between self-antigens and foreign antigens.
B.  inadequate B and/or T cell formation may occur.
C.  IgE mediates a localized reaction.
D.  serum sickness results.
E.  immune surveillance occurs.