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MCQs

Total Questions : 191 | Page 15 of 20 pages
Question 141. Simulation of which of the following will lead to appearance of first antibody to appear following stimulation by an antigen?
  1.    IgE
  2.    IgM
  3.    IgG
  4.    IgA
 Discuss Question
Answer: Option B. -> IgM
Question 142. Antigen binding sites of an immunoglobulin are located in
  1.    Fc region of the antibody
  2.    light chain alone
  3.    heavy chain alone
  4.    Fab regions of the antibody
 Discuss Question
Answer: Option D. -> Fab regions of the antibody
Question 143. Which of the following theory of antibody production is most widely accepted?
  1.    Direct template theory
  2.    Indirect template theory
  3.    Side chain theory
  4.    Clonal selection theory
 Discuss Question
Answer: Option D. -> Clonal selection theory
Question 144. Which is not a function of IgG?
  1.    Involved in opsonization
  2.    Activates or fixes complement
  3.    Major antibody in serum
  4.    First antibody type produced against an antigen during the primary antibody response
 Discuss Question
Answer: Option D. -> First antibody type produced against an antigen during the primary antibody response
Question 145. The class of immunoglobulin, most abundant in body is
  1.    IgG
  2.    IgD
  3.    IgM
  4.    IgE
 Discuss Question
Answer: Option A. -> IgG
Question 146. Which is the most efficient complement fixing class of antibody?
  1.    IgA
  2.    IgG
  3.    IgM
  4.    IgE
 Discuss Question
Answer: Option C. -> IgM
Question 147. J chain is present in
  1.    IgE
  2.    IgA
  3.    Both (a) and (b)
  4.    IgM
 Discuss Question
Answer: Option C. -> Both (a) and (b)
Question 148. Which of the following is the phylogenetically oldest immunoglobulin?
  1.    All are similar
  2.    IgE
  3.    IgG
  4.    IgM
 Discuss Question
Answer: Option D. -> IgM
Question 149. Heat-labile class of immunoglobulins include
  1.    IgE
  2.    IgM
  3.    IgG
  4.    IgA
 Discuss Question
Answer: Option A. -> IgE
Question 150. Which of the following (s) is/are function (s) of Fc fragment of IgG?
  1.    It binds complement
  2.    All of these
  3.    It is related to passage of IgG across the placental barrier
  4.    It determines catabolic rate
 Discuss Question
Answer: Option B. -> All of these

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