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ANTIBIOTICS

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

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

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

barley seeds
all of these
rice seeds
wheat seeds

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Antibiotics
Antibiotics are typically produced in fed batch reactors because

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

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

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

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Antibiotics
Vegetable oil, (corn oil or soybean oil) added in the fermentation medium for penicillin, act as

both (a) and (c)
antifoam agent
carbon source
source of nutrients

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