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Antibiotics

Antibiotics
pH of the fermentation medium for chlorotetracyclins is

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

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

rice seeds
barley seeds
all of these
wheat seeds

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

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

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Antibiotics
Fermentation medium for oxytetracyclin (terramycin) consist of

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

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Antibiotics
Antibiotics are typically produced in fed batch reactors because

antibiotic yields are generally higher when cell growth slows
All of these
the precursors are often toxic to the cells
antibiotic yields are generally higher when cells enter the stationary phase

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Antibiotics
Which of the following organism(s) produce(s) tetracycline?

Steptomyces ramosus
Nocardia sulphurea
Steptomyces aureofaciens
All of these

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