Exercise: Sterilization

Questions for: Sterilization

Typical aeration rates for aerobic fermentation are
A:
0 - 0.5 vvm
B:
0.5 - 1.0 vvm
C:
1.0 - 1.5 vvm
D:
1.5 - 2.0 vvm
Answer: B
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The destruction of microorganisms by steam may be described as
A:
first order chemical reaction
B:
zero order chemical reaction
C:
second order chemical reaction
D:
none of these
Answer: A
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The moist heat is more effective than the dry heat because the intrinsic heat resistance of vegetative cells is greatly
A:
increased in a dry state
B:
decreased in a dry state
C:
increased in a wet state
D:
decreased in a wet state
Answer: A
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The radius of the filter with a depth of 14 cm required for a volumetric airflow rate of 10 m3/min is approximately
A:
1.6 m
B:
0.6 m
C:
3
D:
6 m
Answer: B
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The mechanical means of accomplishing sterilization of fermentation media/equipment is
A:
ultrasonic
B:
radiation
C:
chemical agents
D:
none of these
Answer: A
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