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MCQs

Total Questions : 51 | Page 5 of 6 pages
Question 41. . Each IgA antibody molecule consists of
  1.    four polypeptide chain and has two antigen binding site
  2.    two polypeptide chain and has one antigen binding site
  3.    three polypeptide chain and has two antigen binding site
  4.    two polypeptide chain and has two antigen binding site
 Discuss Question
Answer: Option A. -> four polypeptide chain and has two antigen binding site
Question 42. . Antibodies in the human immune system can identify approximately 108 different molecules Which one of the following is correct?
  1.    This diversity is generated from 108 different immunoglobin genes
  2.    Many of these molecules are self-antigens
  3.    Most of these antibodies recognize proteins
  4.    Most of these antibodies recognize small organic molecules
 Discuss Question
Answer: Option C. -> Most of these antibodies recognize proteins
Question 43. . Monoclonal antibodies were first produced by
  1.    Georges Kohler and Cesar Milstein
  2.    Sarkar and Sommer
  3.    Selman Waksman
  4.    Edward Jenner and Louis Pasteur
 Discuss Question
Answer: Option A. -> Georges Kohler and Cesar Milstein
Question 44. . A polyclonal antibody response
  1.    is produced only in response to polymeric antigens
  2.    s produced by several B cells recognizing different pitopes on the same antigen
  3.    occurs during the lag phase of the immune response
  4.    violates clonal selection
 Discuss Question
Answer: Option B. -> s produced by several B cells recognizing different pitopes on the same antigen
Question 45. . Structures of anti-PCP antibody shows that the tight binding of PCP to the antibody is primarily due to
  1.    hydrophobic forces
  2.    electrostatic forces.
  3.    Van der Waals forces.
  4.    none of these
 Discuss Question
Answer: Option A. -> hydrophobic forces
Question 46. . Antigenic determinants bind to which portions of an antibody?
  1.    Variable regions
  2.    Constant regions
  3.    Only light chains
  4.    Only heavy chains
 Discuss Question
Answer: Option A. -> Variable regions
Question 47. . The humoral immune response relies on the production of soluble proteins called
  1.    antibodies
  2.    macromolecules
  3.    lymphocytes
  4.    none of these
 Discuss Question
Answer: Option A. -> antibodies
Question 48. . 
The human IgG class of antibodies is divided into
  1.    five IgG classes
  2.    two IgG classes
  3.    three IgG classes
  4.    four IgG classes
 Discuss Question
Answer: Option D. -> four IgG classes
Question 49. . Antigenic determinants bind to which portions of an antibody?
  1.    Variable regions
  2.    Constant regions
  3.    Only light chains
  4.    Only heavy chains
 Discuss Question
Answer: Option A. -> Variable regions
Question 50. . The humoral immune response relies on the production of soluble proteins called
  1.    antibodies
  2.    macromolecules
  3.    lymphocytes
  4.    none of these
 Discuss Question
Answer: Option A. -> antibodies

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