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Biochemical Engineering - Fermentation Reactors

Exercise : Fermentation Reactors - Section 1
6.
Mixing in an anaerobic sludge blanket reactor is due to
rapid change in water temperatures throughout the reactor
release of gases by the microbial populations
swimming of microbes
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
7.
In batch culture, protogon is produced from peptone during the stationary phase with a yield of 0.4 protogon mg per g of peptone. If it is to be produced in a chemostat at a dilution rate of 0.5 h-1 from a medium containing 10 g.l-1 of peptone, then the rate of protogon synthesis would be
0 g.l-1h-1
0.5 g.l-1h-1
1 g.l-1h-1
2 g.l-1h-1
Answer: Option
Explanation:
No answer description is available. Let's discuss.
8.
Formation of end product by Lactococcus lactis will become non-growth associated as lactic acid accumulates because
cells will redirect ATP to anabolism
cells will redirect NAD+ to anabolism
cells will redirect ATP to facilitate the diffusion of lactic acid and H+ out of the cells
cells will redirect ATP to the active transport of lactic acid and H+ out of the cells
Answer: Option
Explanation:
No answer description is available. Let's discuss.
9.
Which of the following would not be subjected to the "glucose effect"?
Aspergillus fumigatus
Saccharomyces cerevisiae
Escherichia coli
Aspergillus niger
Answer: Option
Explanation:
No answer description is available. Let's discuss.
10.
Immobilized cell reactors for wastewater treatment have the advantage of having/being
higher cell concentration
more stable and prevent washout
higher dilution rate before the cells washout
all of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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