Exercise: Fermentation Kinetics

Questions for: Fermentation Kinetics

In the death phase
A:
nutrients available for the cells are depleted and begin to die
B:
the number of viable cells will increase
C:
nutrients available for cells are replenished and start to multiply
D:
none of the above
Answer: A
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An open system in which the growth rate is maintained by adding a nutrient (present in limiting quantities) at the same rate as that medium containing micro-organisms is removed is called
A:
manostat
B:
chemostat
C:
turbidostat
D:
culturostat
Answer: B
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Diauxie is
A:
growth factors
B:
microbiological die off
C:
the simultaneous uptake of nutrients
D:
the stagewise uptake of nutrients
Answer: D
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The dilution rate, D is defined as(where F = volumetric flow rate, VR = total volume of culture in the reactor and μ specific growth rate)
A:
F/VR
B:
VR/F
C:
μ/F
D:
F/μ
Answer: A
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The phenomenon in which substrates are used in a sequential manner is known as
A:
trans-substrate genesis
B:
dialism
C:
diauxie
D:
multiplicity
Answer: C
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