Q. If biomass yields are constant, then the biomass productivity of a culture grown in continuous reactor will

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Q. Low dissolved oxygen concentrations leads to

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Q. In a continuous reactor, the medium contains 40 g.l­¹ of maltose and the medium flow rate is 10 litres per hour and the effluent contains 20 g.l­¹ of lactate. What is the productivity of lactate production from this reactor?

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Q. Which of the statement is true for continuous reactor at steady state?

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Q. A continuous bioreactor in which only the flow rate is used to control the rate of cell or product productivity is called

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Q. For organisms growing in a chemostat, the specific growth rate

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Q. Saccharomyces cerevisiae is being grown in a chemostat converts glucose to biomass, ethanol, glycerol and carbon dioxide. At steady state, the concentration of glucose, biomass, ethanol and glycerol will

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Q. In aerobic yeast fermentation for production of citric acid from alkanes using a fed-batch culture, why alkanes are slowly fed to the yeast?

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Q. A fed-batch reactor containing 1 g.l­¹ of substrate in 2 litre of medium. It is fed with 1 g.l-l of substrate at the rate of 1 litre per hour. After 10 hours, the concentration of substrate in the reactor was 0.5 g.l­¹ . The mass of substrate that was used by the culture in the reactor was

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Q. Toxins accumulated in a reactor can lead to low biomass yields probably due to which of the following?

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Q. The cellular productivity in a continuous stirred tank fermenter (CSTF) increases with an increase in the dilution rate and reaches a maximum value. If the dilution rate is increased beyond the maximum point, the productivity will

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Q. Fluidized bed bioreactors provide higher mass transfer rates than packed bed bioreactors because

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Q. In fed-batch fermentation, mass of substrate utilized is calculated using the relationship

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Q. Mixing in an anaerobic sludge blanket reactor is due to

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Q. In batch culture, protogon is produced from peptone during the stationary phase with a yield of 0.4 protogon mg per g of peptone. If it is to be produced in a chemostat at a dilution rate of 0.5 h­¹ from a medium containing 10 g.l­¹ of peptone, then the rate of protogon synthesis would be

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Q. Formation of end product by Lactococcus lactis will become non-growth associated as lactic acid accumulates because

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Q. Which of the following would not be subjected to the "glucose effect"?

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Q. Immobilized cell reactors for wastewater treatment have the advantage of having/being

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Q. Yield coefficient represents

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Q. The lowest biomass yield in a culture of Escherichia coli will be in

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