Exercise: Fermentation Reactors

Questions for: Fermentation Reactors

Monoclonal antibodies are typically produced in fed batch reactors because
A:
hybridoma cells ferment at high maltose concentrations
B:
hybridoma cells yield higher lactate at high glucose concentrations
C:
hybridoma cells respire at high glucose concentrations
D:
none of the above
Answer: B
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In fed batch bioreactor modelling, the rate of change in the bioreactor volume is assumed to be equal to
A:
flow rate
B:
initial volume
C:
volume of solids in the reactor
D:
none of these
Answer: A
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The fastest route of NADH reoxidation is
A:
aerobic respiration
B:
anaerobic respiration
C:
fermentation
D:
decomposition
Answer: C
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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
A:
fed-batch reactor can be used to minimize starch concentrations and prevent a. niger from fermenting
B:
fed-batch reactor can be used to minimize starch concentrations and thus reduce the viscosity of the medium
C:
continuous reactor can be used to minimize starch concentrations and their inhibitory effects
D:
all of the above
Answer: B
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In a fluidized bed reactor mixing is achieved by
A:
gravity flow of fluid
B:
upward movement of the incoming feed
C:
diffusion
D:
both (a) and (b)
Answer: D
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