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Antibiotics

Antibiotics
Streptomycin is produced by

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

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Antibiotics
pH of the fermentation medium for chlorotetracyclins is

8-9
5-6
7-8
6-7

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Antibiotics
Inoculum preparation for the fermentation medium for penicillin takes place on

rice seeds
barley seeds
wheat seeds
all of these

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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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Antibiotics
Penicillin is recovered after fermentation as

calcium penicillin
sodium penicillin
penicillin only
potassium penicillin

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

All of these
Autolysis of the medium starts
Concentration of antibiotic increases in the medium
Slight rise in pH due to liberation of ammonia

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