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MCQs

Total Questions : 92 | Page 2 of 10 pages
Question 11. In human B cells and T cells are matured in the
  1.    bone marrow and thymus respectively
  2.    lymph nodes and spleen respectively
  3.    bursa and thymus respectively
  4.    none of these
 Discuss Question
Answer: Option A. -> bone marrow and thymus respectively
Answer: (a).bone marrow and thymus respectively
Question 12. T cells are the source of
  1.    interleukin
  2.    interferon
  3.    lymphotoxin
  4.    all of these
 Discuss Question
Answer: Option D. -> all of these
Answer: (d).all of these
Question 13. The primary B cell receptor is
  1.    IgD
  2.    IgG
  3.    IgA
  4.    IgE
 Discuss Question
Answer: Option A. -> IgD
Answer: (a).IgD
Question 14. It is highly valued if the lymphocytes derived from the lymph node or tonsil tend to undergo fusion at
  1.    high frequencies
  2.    moderate frequencies
  3.    low frequencies
  4.    at no frequency
 Discuss Question
Answer: Option A. -> high frequencies
Answer: (a).high frequencies
Question 15. An example of mosaic antigen is
  1.    virus
  2.    bacteria
  3.    a hapten
  4.    protein
 Discuss Question
Answer: Option A. -> virus
Answer: (a).virus
Question 16. Penicillin is produced by
  1.    aerobic fermentation
  2.    anaerobic fermentation
  3.    aerobic fermentation followed by anaerobic fermentation
  4.    anaerobic fermentation followed by aerobic fermentation
 Discuss Question
Answer: Option A. -> aerobic fermentation
Answer: (a).aerobic fermentation
Question 17. Which of the following event occurs during second phase of growth of P. chrysogenum?
  1.    Synthesis of penicillin is high
  2.    Mycelial mass increases
  3.    pH increase
  4.    Both (a) and (b)
 Discuss Question
Answer: Option D. -> Both (a) and (b)
Answer: (d).Both (a) and (b)
Question 18. Media composition for the production of streptomycin is
  1.    soybean meal, glucose, peptone, malt extract, sodium chloride
  2.    soybean meal, glucose, peptone, malt extract, ammonium chloride
  3.    soybean meal, glucose, peptone, malt extract, calcium carbonate
  4.    soybean meal, glucose, peptone, malt extract, ammonium sulphate
 Discuss Question
Answer: Option A. -> soybean meal, glucose, peptone, malt extract, sodium chloride
Answer: (a).soybean meal, glucose, peptone, malt extract, sodium chloride
Question 19. Penicillin is recovered after fermentation as
  1.    potassium penicillin
  2.    calcium penicillin
  3.    sodium penicillin
  4.    penicillin only
 Discuss Question
Answer: Option A. -> potassium penicillin
Answer: (a).potassium penicillin
Question 20. Inoculum preparation for the fermentation medium for penicillin takes place on
  1.    wheat seeds
  2.    barley seeds
  3.    rice seeds
  4.    all of these
 Discuss Question
Answer: Option B. -> barley seeds
Answer: (b).barley seeds

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