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Antibiotics

Antibiotics
Streptomycin is produced by

S. ramosus
S. griseoflavus
S. griseus
S. aerofaciens

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Antibiotics
Vegetable oil, (corn oil or soybean oil) added in the fermentation medium for penicillin, act as

antifoam agent
source of nutrients
carbon source
both (a) and (c)

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Antibiotics
The yield of the antibiotic depends upon

all of these
composition of the medium
pH of the medium
age of the inoculum

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Antibiotics
Which of the following precursor is added in the medium to get penicillin G?

Ammonium chloride
Ammonium sulphate
Phenyl acetic acid
Phenyl carbamic acid

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Antibiotics
Fermentation medium for oxytetracyclin (terramycin) consist of

CSL, starch,(NH4)2 SO4, ammonium chloride and CaCO3
CSL, (NH4)2 SO4, sodium chloride and CaCO3
CSL,(NH4)2 SO4, ammonium chloride and CaCO3
CSL, starch, (NH4)2 SO4, sodium chloride and CaCO3

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Antibiotics
High yield of chlorotetracyclin requires

continuous aeration
no aeration
controlled aeration
aeration which does not affect the yield

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