Q. Fed batch reactors is used to produce vinegar because

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Q. When a culture of fermenting yeast becomes metabolically uncoupled, ethanol

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Q. Mixing profiles closest to plug flow are observed in

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Q. On a glucose medium, the growth of an organism is characterized by the following Monod model and stoichiometric parameters μm = 0.3 h­¹, Ks =0.05 g.l­¹ and Yxs = 0.3 g.g­¹ When this organism is grown in a 2 litre continuous on a medium containing 10 g.l­¹ of glucose added at 1 l.h­¹, the steady state concentration of biomass in the reactor will be

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Q. A continuous reactor has a dilution rate of 0.5 h­¹. Its residence time would be

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Q. Which of the following is used to calculate mass of substrate in the reactor?

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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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