20901. In a fluidized bed reactor mixing is achieved by
20902. 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
20903. The fastest route of NADH reoxidation is
20904. In fed batch bioreactor modelling, the rate of change in the bioreactor volume is assumed to be equal to
20905. Monoclonal antibodies are typically produced in fed batch reactors because
20906. In plug flow tubular reactor the axial velocity profile on cross-section will be
20907. 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
20908. 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?
20909. The ideal tubular-flow fermenter without radial variations is called a
20910. Pseudo-steady state in a continuous reactor refers to a reactor in which
20911. The toxicity of organic acids to cells
20912. Which of the following is best described as secondary metabolite?
20913. A microorganism which is subjected to the Crabtree effect is most likely to
20914. When the product formation is approximately equal to the rate of cell growth, the pattern of product formation is termed as
20915. 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?
20916. Pseudomonas aeruginosa has a maximum specific growth rate of 0.8 h-1 in a medium with glucose as a growth limiting substrate. To prevent wash out, the dilution rate must be set to
20917. Saccharomyces cerevisiae when grown in high glucose concentration medium, the cells activity depends on which of the following?
20918. Continuous culture has an advantage over to a batch cultures as
20919. In the batch-fed mode, substrate will be added
20920. When Escherichia coli grow in a well aerated medium, which of the following will occur?
20921. Yield coefficient represents
20922. The lowest biomass yield in a culture of Escherichia coli will be in
20923. When two populations compete for a single growth limiting substrate in a continuous fermenter, which organism would not be washed out?
20924. The continuous cultures are not widely used in industry because
20925. The lowest yield of ATP /is in
20926. If drama : Audience, then writing
20927. Saranjami system was an important feature of the :
20928. What is ‘Panini’ associated with?
20929. Davis Cup is associated with:
20930. Energy is measured in the same unit as that of
20931. Bubble free aeration systems requires
20932. Non-linear relationship between shear stress and shear rate exists in
20933. If the viscosity of a fluid decreases with increasing stirrer speed, then the nature of the fluid is
20934. A pseudoplastic fluid is one in which the viscosity
20935. A viscoelastic fluid is one in which the viscosity
20936. Mixing in stirred tank reactors can
20937. In animal cell bioreactor, bubble damage can be minimized by
20938. The viscosity of a fluid changes with either stirrer speed or mixing time. But when mixing ceases, the viscosity returns to its original state. This fluid is best described as
20939. In sparged mammalian cell bioreactors, the cell damage is caused because of
20940. The SI unit for viscosity is
20941. The viscous nature of a non-Newtonian fluid
20942. Which of the following compound, if added to a solution will lead to the greatest increase in viscosity?
20943. A Brookfield viscometer measures viscosity by determining
20944. Which of the following factors will affect the sensitivity of animal cells to shear conditions?
20945. The best described action of Pluronic F68 (non-ionic detergent) in a cell culture medium is that, it
20946. Water is a
20947. Which of the following affect the Kolmogorov eddy size?
20948. A liquid is flowing at 11,400 l.h-1 along a pipeline having a diameter of 4 cm. If the liquid has a density of 1 g.ml-1 and viscosity of 0.001kg.m-1.s-1, then the liquid would be in the
20949. The viscosity of a fluid increases with the length of time that it is being mixed. This fluid would be best described as being
20950. Which of the following can act as a shear protectorant?
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