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MCQs

Total Questions : 105 | Page 5 of 11 pages
Question 41. B-cells arise from ______________________
  1.    progenitor cells
  2.    antigens
  3.    antibodies
  4.    natural killer cells
 Discuss Question
Answer: Option A. -> progenitor cells
Answer: (a).progenitor cells
Question 42. Some of the activated B-cells lead to the formation of short-lived ______________________
  1.    plasma cells
  2.    evanescent waves
  3.    memory cells
  4.    thymus cells
 Discuss Question
Answer: Option A. -> plasma cells
Answer: (a).plasma cells
Question 43. B-lymphocytes that do not differentiate into plasma cells are called _______________________
  1.    T-lymphocytes
  2.    Helper T-cells
  3.    Memory B cells
  4.    Memory T-cells
 Discuss Question
Answer: Option C. -> Memory B cells
Answer: (c).Memory B cells
Question 44. Antigens that do not require the involvement of T-cells for the activation of B-cells are _____________________
  1.    thymus-dependent
  2.    thymus-independent
  3.    intracellular pathogens
  4.    facultative anaerobes
 Discuss Question
Answer: Option B. -> thymus-independent
Answer: (b).thymus-independent
Question 45. Plasma cells possess extensive smooth endoplasmic reticulum.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 46. For the body to develop immunologic tolerance, production of ____________________ must be prevented.
  1.    antibodies
  2.    antigens
  3.    autoantibodies
  4.    lymphocytes
 Discuss Question
Answer: Option C. -> autoantibodies
Answer: (c).autoantibodies
Question 47. Who discovered the vaccination against smallpox?
  1.    Louis Pasteur
  2.    Francis Crick
  3.    Barbara McClintock
  4.    Edward Jenner
 Discuss Question
Answer: Option D. -> Edward Jenner
Answer: (d).Edward Jenner
Question 48. In case of acquired immune system, a secondary immune response is generated by the ______________
  1.    memory B-cells
  2.    germ cells
  3.    lymphoid tissues
  4.    antigens
 Discuss Question
Answer: Option A. -> memory B-cells
Answer: (a).memory B-cells
Question 49. Which of the following serves as antigen receptors?
  1.    antibodies
  2.    cytokines
  3.    chemokines
  4.    necrosis factors
 Discuss Question
Answer: Option A. -> antibodies
Answer: (a).antibodies
Question 50. A harmless version of tetanus toxin is called _________________
  1.    clostridium
  2.    plasmid
  3.    toxoid
  4.    thylakoid
 Discuss Question
Answer: Option C. -> toxoid
Answer: (c).toxoid

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