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Antibiotics

Antibiotics
At normal pH, penicillin remains in

solvent phase
precipitates
both (a) and (b)
aqueous phase

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Antibiotics
Media used for the production of chlorotetracyclin consists of

corn steep liquor, CaCO3, (NH4)2SO4 and NH4 Cl
corn steep liquor, CaCO3 and (NH4)2SO4
sugar, CaCO3 and (NH4)2SO4
sugar, corn steep liquor, CaCO3, (NH4)2SO4 and NH4 Cl

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Antibiotics
Chlorotetracyclin is soluble in

organic solvents
water
ether
all of these

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Antibiotics
Streptomycin is produced by

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

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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
At acidic pH, penicillin remains in

precipitates
aqueous phase
both (a) and (b)
solvent phase

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