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Antibiotics

Antibiotics
Streptomycin is produced by

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

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Antibiotics
pH of the fermentation medium for chlorotetracyclins is

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

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Antibiotics
At acidic pH, penicillin remains in

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

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

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

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

all of these
barley seeds
rice seeds
wheat seeds

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

Steptomyces aureofaciens
Nocardia sulphurea
All of these
Steptomyces ramosus

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