200 Best MCQs on Fermentation kinetics- biochemical engineering
Top 200 MCQs on Fermentation Kinetics
This section contains MCQs/ Objective Type Questions of Fermentation Kinetics for various competetive Exams like HPPSC HPSSC HPSSSB and other exams
Q1). The function of the disengagement zone in an airlift fermenter is to
a).prevent CO2 rich bubbles from entering the downcomer
b).reduce the velocity of the bubbles
c).reduce liquid loss as aerosols
d).all of the above
Correct Answer:
all of the above
Explaination:
Q2). Stationary phase is described as
a).no further increase in the cell population after a maximum value
b).deceleration of growth and division rate after the growth rate reaches a maximum
c).acceleration of growth and division rate after the growth rate reaches a maximum
d).deceleration of growth and division rate after the growth rate reaches a minimum
Correct Answer:
no further increase in the cell population after a maximum value
Explaination:
Q3). In the accelerated phase, cell starts to
a).increase and the division rate increases to reach a maximum
b).decrease and the division rate increases to reach a maximum
c).increase and the division rate decreases to reach a maximum
d).increase and the division rate increases to reach a minimum
Correct Answer:
increase and the division rate increases to reach a maximum
Explaination:
Q4). The monod model predicts that the specific growth rate
a).will increase with the concentration of the growth limiting substrate until it reaches a maximum value
b).will decrease with the concentration of the growth limiting substrate
c).will increase with the concentration of the growth limiting substrate
d).does not depend on growth limiting substrate
Correct Answer:
will increase with the concentration of the growth limiting substrate until it reaches a maximum value
Explaination:
Q5). A mixed fermentation is one, which produces
a).both alcohol and carbon dioxide
b).both acid and carbon dioxide
c).both acid and alcohol
d).several different kinds of acid
Correct Answer:
both acid and alcohol
Explaination:
Q6). The function of a mechanical seal is to
a).prevent contaminants entering the reactor
b).prevent cells from leaving the reactor
c).both (a) and (b)
d).prevent air to enter
Correct Answer:
both (a) and (b)
Explaination:
Q7). The phenomenon in which substrates are used in a sequential manner is known as
a).trans-substrate genesis
b).dialism
c).diauxie
d).multiplicity
Correct Answer:
diauxie
Explaination:
Q8). Diauxie is
a).growth factors
b).microbiological die off
c).the simultaneous uptake of nutrients
d).the stagewise uptake of nutrients
Correct Answer:
the stagewise uptake of nutrients
Explaination: