200 Best MCQs on Fermentation Reactors- biochemical engineering
Top 200 MCQs on Fermentation reactors
This section contains MCQs/ Objective Type Questions of fermentation reactors for various competetive Exams like HPPSC HPSSC HPSSSB and other exams
Q1). Yield coefficient represents
a).total biomass or product produced
b).conversion efficiency of a substrate into product
c).conversion rate of a substrate into biomass or product
d).production time of biomass or product
Correct Answer:
conversion efficiency of a substrate into product
Explaination:
Q2). The lowest biomass yield in a culture of Escherichia coli will be in
a).an aerated batch culture containing a initial high concentration of glucose
b).an aerated batch reactor containing an initial low concentration of glucose
c).an aerated fed-batch reactor having a low glucose concentration
d).an aerated continuous reactor having a low glucose concentration
Correct Answer:
an aerated batch culture containing a initial high concentration of glucose
Explaination:
Q3). When two populations compete for a single growth limiting substrate in a continuous fermenter, which organism would not be washed out?
a).Organism maintaining the highest substrate concentration
b).Organism maintaining the lowest substrate concentration
c).Both (a) and (b)
d).Organism maintaining the moderate substrate concentration
Correct Answer:
Organism maintaining the lowest substrate concentration
Explaination:
Q4). The continuous cultures are not widely used in industry because
a).they are not suited for the production of secondary metabolites
b).contamination or mutation can have a disastrous effect on the operation
c).the government will not approve the licensing of pharmaceuticals produced in continuous cultures
d).all of the above
Correct Answer:
all of the above
Explaination:
Q5). The lowest yield of ATP /is in
a).fermentation
b).aerobic respiration
c).anaerobic respiration
d).same in (a), (b) and (c)
Correct Answer:
fermentation
Explaination:
Q6). Mixing in an anaerobic sludge blanket reactor is due to
a).rapid change in water temperatures throughout the reactor
b).release of gases by the microbial populations
c).swimming of microbes
d).none of the above
Correct Answer:
release of gases by the microbial populations
Explaination:
Q7). Formation of end product by Lactococcus lactis will become non-growth associated as lactic acid accumulates because
a).cells will redirect ATP to anabolism
b).cells will redirect NAD+ to anabolism
c).cells will redirect ATP to facilitate the diffusion of lactic acid and H+ out of the cells
d).cells will redirect ATP to the active transport of lactic acid and H+ out of the cells
Correct Answer:
cells will redirect ATP to the active transport of lactic acid and H+ out of the cells
Explaination:
Q8). Which of the following would not be subjected to the “glucose effect”?
a).Aspergillus fumigatus
b).Saccharomyces cerevisiae
c).Escherichia coli
d).Aspergillus niger
Correct Answer:
Escherichia coli
Explaination: