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Total Questions : 92 | Page 8 of 10 pages
Question 71.  At acidic pH, penicillin remains in
  1.    aqueous phase
  2.    solvent phase
  3.    both (a) and (b)
  4.    precipitates
 Discuss Question
Answer: Option B. -> solvent phase
Question 72.  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
Question 73.  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
Question 74. . Which of the following precursor is added in the medium to get penicillin G?
  1.    Phenyl carbamic acid
  2.    Phenyl acetic acid
  3.    Ammonium sulphate
  4.    Ammonium chloride
 Discuss Question
Answer: Option B. -> Phenyl acetic acid
Question 75. . 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
Question 76. . High yield of chlorotetracyclin requires
  1.    no aeration
  2.    continuous aeration
  3.    aeration which does not affect the yield
  4.    controlled aeration
 Discuss Question
Answer: Option B. -> continuous aeration
Question 77. . Media used for the production of chlorotetracyclin consists of
  1.    sugar, corn steep liquor, CaCO3, (NH4)2SO4 and NH4 Cl
  2.    corn steep liquor, CaCO3 and (NH4)2SO4
  3.    sugar, CaCO3 and (NH4)2SO4
  4.    corn steep liquor, CaCO3, (NH4)2SO4 and NH4 Cl
 Discuss Question
Answer: Option A. -> sugar, corn steep liquor, CaCO3, (NH4)2SO4 and NH4 Cl
Question 78. . Which of the following organism(s) produce(s) tetracycline?
  1.    Steptomyces aureofaciens
  2.    Steptomyces ramosus
  3.    Nocardia sulphurea
  4.    All of these
 Discuss Question
Answer: Option D. -> All of these
Question 79. . Streptomycin is produced by
  1.    S. griseus
  2.    S. griseoflavus
  3.    S. aerofaciens
  4.    S. ramosus
 Discuss Question
Answer: Option A. -> S. griseus
Question 80. . Which of the following event occurs during second phase of growth of P. chrysogenum?
  1.    Synthesis of penicillin is high
  2.    Synthesis of penicillin is high
  3.    pH increase
  4.    Both (a) and (b)
 Discuss Question
Answer: Option D. -> Both (a) and (b)

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