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MCQs

Total Questions : 191 | Page 17 of 20 pages
Question 161. Precipitation reaction can be converted into agglutination reaction by coating soluble antigen onto
  1.    RBCs
  2.    bentonite particles
  3.    latex particles
  4.    all of these
 Discuss Question
Answer: Option D. -> all of these
Question 162. Commercially available ELISA kits are used for the detection of
  1.    hepatitis B surface antigen
  2.    all of these
  3.    anti-HIV antibodies
  4.    rotavirus
 Discuss Question
Answer: Option B. -> all of these
Question 163. Quellung reaction is used for typing of
  1.    Klebsiella pneumoniae
  2.    Streptococcus pneumoniae
  3.    Both (a) and (b)
  4.    None of these
 Discuss Question
Answer: Option C. -> Both (a) and (b)
Question 164. Fluorescent treponemal antibody test is an example of
  1.    direct immunofluorescence
  2.    none of these
  3.    indirect immunofluorescence
  4.    both (a) and (b)
 Discuss Question
Answer: Option C. -> indirect immunofluorescence
Question 165. Counter-immunoelectrophoresis is used for the detection of
  1.    All of these
  2.    Alpha-fetoprotein
  3.    Hepatitis B surface antigen
  4.    Meningococcal antigen
 Discuss Question
Answer: Option A. -> All of these
Question 166. The test (s) based on the principle of toxin neutralization is/are
  1.    Nagler's reaction
  2.    both (a) and (b)
  3.    none of these
  4.    Schick test
 Discuss Question
Answer: Option B. -> both (a) and (b)
Question 167. Amount of various immunoglobulin classes can be measured by
  1.    single diffusion in two dimensions
  2.    double diffusion in one dimension
  3.    double diffusion in two dimensions
  4.    single diffusion in one dimension
 Discuss Question
Answer: Option A. -> single diffusion in two dimensions
Question 168. Slide agglutination reaction is/are useful for the identification of the culture(s) of
  1.    Vibrio cholerae
  2.    Shigella
  3.    All of these
  4.    Salmonella
 Discuss Question
Answer: Option C. -> All of these
Question 169. Which of the following is correct for isoantigens?
  1.    They are antigens found in some members of different species
  2.    They are antigens found in all members of a species
  3.    They are antigens found in some members of a species
  4.    They are antigens found in all members of different species
 Discuss Question
Answer: Option C. -> They are antigens found in some members of a species
Question 170. Numerous antibodies can be prepared, against one antigen, each binds to unique epitopes. How is this antibody diversity generated?
  1.    Antibody proteins can physically change their shape to bind different epitopes
  2.    By the combination of different heavy and light chains that form the antigen binding site
  3.    By rearrangements of the DNA encoding the variable regions of the heavy and light chains
  4.    Both (a) and (b)
 Discuss Question
Answer: Option D. -> Both (a) and (b)

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