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

View solution

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?

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

Q. The fastest route of NADH reoxidation is

View solution

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

View solution

Q. The toxicity of organic acids to cells

View solution

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

View solution

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

View solution

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?

View solution

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

View solution

Q. Saccharomyces cerevisiae produces high biomass yields at low glucose concentrations and high dissolved oxygen concentrations. Which of the following should be followed for maximizing its biomass productivity?

View solution