PHP CONTROL STRUCTURES (LOOP) QUIZ

all of these

organic solvents

water

ether

aeration which does not affect the yield

no aeration

continuous aeration

controlled aeration

barley seeds

all of these

rice seeds

wheat seeds

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

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

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

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

Slight rise in pH due to liberation of ammonia

All of these

Concentration of antibiotic increases in the medium

Autolysis of the medium starts

pH increase

Synthesis of penicillin is high

Mycelial mass increases

Both (a) and (b)

All of these

Ammonia is liberated in the medium

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

Growth of mycelia occurs

aerobic fermentation

anaerobic fermentation followed by aerobic fermentation

anaerobic fermentation

aerobic fermentation followed by anaerobic fermentation

both (a) and (c)

carbon source

source of nutrients

antifoam agent

the precursors are often toxic to the cells

All of these

antibiotic yields are generally higher when cells enter the stationary phase

antibiotic yields are generally higher when cell growth slows