Q. Production of organic acids in batch culture is generally growth associated phase followed by non-growth associated production. The probable reason for this is that

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Q. The concentration of biomass in a continuous stirred tank reactor is 20 g dry weight per litre. What would be the concentration of biomass in the effluent?

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Q. The ideal tubular-flow fermenter without radial variations is called a

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Q. Pseudo-steady state in a continuous reactor refers to a reactor in which

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Q. The toxicity of organic acids to cells

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Q. The production of an amylase from starch by Aspergillus niger is often performed in a fed batch fermenter. This is due to the reason that

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Q. The fastest route of NADH reoxidation is

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Q. In fed batch bioreactor modelling, the rate of change in the bioreactor volume is assumed to be equal to

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Q. Monoclonal antibodies are typically produced in fed batch reactors because

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Q. In plug flow tubular reactor the axial velocity profile on cross-section will be

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Q. Saccharomyces cerevisiae when grown in high glucose concentration medium, the cells activity depends on which of the following?

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Q. Continuous culture has an advantage over to a batch cultures as

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Q. In the batch-fed mode, substrate will be added

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Q. When Escherichia coli grow in a well aerated medium, which of the following will occur?

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Q. Which of the following is best described as secondary metabolite?

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Q. A microorganism which is subjected to the Crabtree effect is most likely to

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Q. When the product formation is approximately equal to the rate of cell growth, the pattern of product formation is termed as

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Q. Which of the following would be correct concerning the concentration of biomass (X). growth limiting substrate (S) and product (P) in a chemostat when the cells have been washed out?

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Q. Pseudomonas aeruginosa has a maximum specific growth rate of 0.8 h­¹ in a medium with glucose as a growth limiting substrate. To prevent wash out, the dilution rate must be set to

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Q. In a glucose-yeast extract medium, Lactococcus lactis has a maximum specific growth rate (um) of 1.23 h­¹. What would be the specific growth rate of this organism at steady state in a 4 litre reactor being fed at 2 litres per hour?

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