Fermentation Kinetics MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Fermentation Kinetics, a fundamental topic in the field of Biochemical Engineering. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Fermentation Kinetics MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of Fermentation Kinetics mcq questions that explore various aspects of Fermentation Kinetics problems. Each MCQ is crafted to challenge your understanding of Fermentation Kinetics principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Biochemical Engineering tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Fermentation Kinetics MCQs are your pathway to success in mastering this essential Biochemical Engineering topic.

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Fermentation Kinetics MCQs | Page 6 of 8

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Q51.
The specific growth rate is affected by

a.

sabstrate concentration

b.

product concentration

c.

oxygen supply

d.

all of these

Discuss
Answer: (d).all of these
Q52.
The main function(s) of a draft tube in an air lift fermenter is/are to

a.

increase the solubility of oxygen

b.

distribute shear forces throughout the reactor and minimise bubble coalescence

c.

concentrate shear forces around the sparger

d.

concentrate shear forces near the disengagement zone

Discuss
Answer: (b).distribute shear forces throughout the reactor and minimise bubble coalescence
Q53.
Which of the following is incorrect?

a.

The mechanical agitation and aeration are effective for suspension of cells

b.

The mechanical agitation and aeration are effective for mixing the medium

c.

STF can't be used for high viscosity medium

d.

The mechanical agitation and aeration are effective for oxygenation

Discuss
Answer: (c).STF can't be used for high viscosity medium
Q54.
The contents in bubble column and air lift reactor are mixed through

a.

compressed air

b.

a mechanical internal moving part

c.

external pumping

d.

any of these

Discuss
Answer: (a).compressed air
Q55.
Which of the following statements would be appropriate while comparing bubble column and air lift fermenter of the same size?

a.

The average bubble size is smaller in an airlift bioreactor

b.

Oxygen transfer rate is higher in an airlift bioreactor

c.

The surface area for gas exchange is higher in an airlift bioreactor

d.

All of the above

Discuss
Answer: (d).All of the above
Q56.
Lag phase occurs mainly due to

a.

acclimatization with new environment and substrate

b.

higher growth temperature

c.

substrate disliking

d.

variation in substrate concentration

Discuss
Answer: (a).acclimatization with new environment and substrate
Q57.
In a batch reactor specific growth rate

a.

remains constant throughout the process

b.

increases exponentially

c.

changes during the fermentation

d.

is highest during the stationary phase

Discuss
Answer: (c).changes during the fermentation
Q58.
Turbidostat is recommended when continuous fermentation needs to be carried out at

a.

high dilution rates near the washout point

b.

low dilution rates near the washout point

c.

moderate dilution rates near the washout point

d.

any intensity of dilution rates near the washout point

Discuss
Answer: (a).high dilution rates near the washout point
Q59.
The advantage of airlift bioreactors over stirred tank bioreactors of a similar size is

a.

higher oxygen transfer rates

b.

more uniform shear conditions

c.

both (a) and (b)

d.

less foaming

Discuss
Answer: (c).both (a) and (b)
Q60.
Stirred tank fermenter (STF) can be employed for

a.

aerobic fermentation of a wide range of cells including microbial, animal and plant cells

b.

anaerobic fermentation of a wide range of cells including microbial, animal and plant cells

c.

Both (a) and (b)

d.

anaerobic fermentation of plant cells only

Discuss
Answer: (c).Both (a) and (b)
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