Exercise: Fermentation Kinetics

Questions for: Fermentation Kinetics

To describe components of an airlift bioreactor which of the follow-ings are generally included?
A:
Disengagement zone, air riser, downcomer
B:
Flotsam, jetsam, downzone
C:
Air comer, disentanglement zone, downsizer
D:
All of the above
Answer: A
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Which of the following(s) is/are considered the limitations of the exponential growth model?
A:
Only predicts that cells grow exponentially during the log phase
B:
It does not consider factors that causes cells growth to stop or slow
C:
Predicts cell growth at a linear rate
D:
All of the above
Answer: B
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At the end of the lag phase, when growth begins, the division rate increases gradually and reaches a maximum value in the exponential growth period. This transitional period is commonly called the accelerated growth phase and is often included as a part of the
A:
lag phase
B:
stationary phase
C:
death phase
D:
exponential growth phase
Answer: A
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The air riser is located on the outside of the draft tube for the large-scale airlift bioreactors because of
A:
higher oxygen transfer rates
B:
a small sparge ring
C:
better heat transfer efficiencies
D:
all of these
Answer: C
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In an airlift bioreactor, the air sparging region is called
A:
downcomer
B:
disengagement zone
C:
air riser
D:
none of these
Answer: C
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