Exercise: Antibiotics

Questions for: Antibiotics

Which of the following event occurs during second phase of growth of P. chrysogenum?
A:
Synthesis of penicillin is high
B:
Mycelial mass increases
C:
pH increase
D:
Both (a) and (b)
Answer: D
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Streptomycin is produced by
A:
S. griseus
B:
S. griseoflavus
C:
S. aerofaciens
D:
S. ramosus
Answer: A
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High yield of chlorotetracyclin requires
A:
no aeration
B:
continuous aeration
C:
aeration which does not affect the yield
D:
controlled aeration
Answer: B
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Which of the following precursor is added in the medium to get penicillin G?
A:
Phenyl carbamic acid
B:
Phenyl acetic acid
C:
Ammonium sulphate
D:
Ammonium chloride
Answer: B
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Media used for the production of chlorotetracyclin consists of
A:
sugar, corn steep liquor, CaCO3, (NH4)2SO4 and NH4 Cl
B:
corn steep liquor, CaCO3 and (NH4)2SO4
C:
sugar, CaCO3 and (NH4)2SO4
D:
corn steep liquor, CaCO3, (NH4)2SO4 and NH4 Cl
Answer: A
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