ANTIBIOTICS QUIZ

Concentration of antibiotic increases in the medium

All of these

Autolysis of the medium starts

Slight rise in pH due to liberation of ammonia

soybean meal, glucose, peptone, malt extract, calcium carbonate

soybean meal, glucose, peptone, malt extract, ammonium sulphate

soybean meal, glucose, peptone, malt extract, ammonium chloride

soybean meal, glucose, peptone, malt extract, sodium chloride

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

all of these

rice seeds

wheat seeds

barley seeds

Synthesis of penicillin is high

pH increase

Both (a) and (b)

Mycelial mass increases

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

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

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

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

during the second phase

during the first phase

same in all the phases

during the third phase

sugar, CaCO3 and (NH4)2SO4

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

corn steep liquor, CaCO3 and (NH4)2SO4

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

aerobic fermentation followed by anaerobic fermentation

anaerobic fermentation followed by aerobic fermentation

aerobic fermentation

anaerobic fermentation

Lactic acid present in the corn steep liquor is utilized at the maximum rate

Growth of mycelia occurs

Ammonia is liberated in the medium

All of these