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Antibiotics

Antibiotics
Chlorotetracyclin is soluble in

all of these
organic solvents
water
ether

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Antibiotics
During which phase of growth of Penicillium chrysogenum maximum antibiotic production takes place

during the first phase
same in all the phases
during the third phase
during the second phase

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Antibiotics
Which of the following event occurs during second phase of growth of P. chrysogenum?

Both (a) and (b)
pH increase
Mycelial mass increases
Synthesis of penicillin is high

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Antibiotics
Media used for the production of chlorotetracyclin consists of

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

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Antibiotics
Streptomycin is produced by

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

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Antibiotics
Fermentation medium for oxytetracyclin (terramycin) consist of

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

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