Antibodies And Immune System(Microbiology ) Questions and Answers

Question 1. Which of the following mediates Type I hypersensitivity reaction?
  1.    IgE
  2.    IgG
  3.    IgM
  4.    IgD
Explanation:-
Answer: Option A. -> IgE
Answer: (a).IgE
Question 2. Antigen binding sites of an immunoglobulin are located in
  1.    light chain alone
  2.    heavy chain alone
  3.    Fc region of the antibody
  4.    Fab regions of the antibody
Explanation:-
Answer: Option D. -> Fab regions of the antibody
Answer: (d).Fab regions of the antibody
Question 3. Which of the following theory of antibody production is most widely accepted?
  1.    Side chain theory
  2.    Clonal selection theory
  3.    Direct template theory
  4.    Indirect template theory
Explanation:-
Answer: Option B. -> Clonal selection theory
Answer: (b).Clonal selection theory
Question 4. Which is the most efficient complement fixing class of antibody?
  1.    IgE
  2.    IgA
  3.    IgM
  4.    IgG
Explanation:-
Answer: Option C. -> IgM
Answer: (c).IgM
Question 5. The class of immunoglobulin, most abundant in body is
  1.    IgD
  2.    IgE
  3.    IgG
  4.    IgM
Explanation:-
Answer: Option C. -> IgG
Answer: (c).IgG
Question 6. Attachment of 'erythrocytes' to surface of virally infected cell is termed as
  1.    Interference
  2.    Hemadsorption
  3.    Neutralization
  4.    Complement fixation
Explanation:-
Answer: Option B. -> Hemadsorption
Answer: (b).Hemadsorption
Question 7. Overactivity of Th cells may result into
  1.    autoimmunity
  2.    optimal antibody response
  3.    optimal cell-mediated response
  4.    none of the above
Explanation:-
Answer: Option A. -> autoimmunity
Answer: (a).autoimmunity
Question 8. A duration of time, a specific antibody develops, becoming detachable in blood, known as
  1.    Serology
  2.    Blood culture
  3.    Seroconversion
  4.    Antibody production
Explanation:-
Answer: Option C. -> Seroconversion
Answer: (c).Seroconversion
Question 9. In which of the following cell mediated immunity (CMI) participates?
  1.    Delayed hypersensitivity reaction
  2.    Graft versus host reaction
  3.    Allograft rejection
  4.    All of the above
Explanation:-
Answer: Option D. -> All of the above
Answer: (d).All of the above
Question 10. 'Enfuvirtide' is an alternative name of
  1.    Fuzeon
  2.    Selzentry
  3.    Acyclovir
  4.    Vidarabine
Explanation:-
Answer: Option A. -> Fuzeon
Answer: (a).Fuzeon
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