Fermentation Reactors MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Fermentation Reactors, 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 Reactors 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 Reactors mcq questions that explore various aspects of Fermentation Reactors problems. Each MCQ is crafted to challenge your understanding of Fermentation Reactors 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 Reactors MCQs are your pathway to success in mastering this essential Biochemical Engineering topic.

Note: Each of the following question comes with multiple answer choices. Select the most appropriate option and test your understanding of Fermentation Reactors. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

So, are you ready to put your Fermentation Reactors knowledge to the test? Let's get started with our carefully curated MCQs!

Fermentation Reactors MCQs | Page 6 of 7

Discover more Topics under Biochemical Engineering

Q51.
Saccharomyces cerevisiae when grown in high glucose concentration medium, the cells activity depends on which of the following?

a.

High concentration of dissolved oxygen

b.

Low concentration of dissolved oxygen

c.

No effect of dissolved oxygen

d.

High concentration of dissolved oxygen and sodium salts

Discuss
Answer: (c).No effect of dissolved oxygen
Q52.
Continuous culture has an advantage over to a batch cultures as

a.

continuous reactors do not need to be shut down and cleaned as regularly as a batch reactor

b.

most downstream and upstream processes are continuous in nature and thus the operation of continuous bioreactor can be better integrated into the overall manufacturing process

c.

cells can be maintained at a constant physiological state simply by setting the dilution rate

d.

all of the above

Discuss
Answer: (d).all of the above
Q53.
In the batch-fed mode, substrate will be added

a.

only at the beginning of the fermentation process

b.

periodically throughout the fermentation process

c.

only at the end of the fermentation process

d.

substrate is never added

Discuss
Answer: (c).only at the end of the fermentation process
Q54.
When Escherichia coli grow in a well aerated medium, which of the following will occur?

a.

Fructose di-phosphate accumulation inside the cells leading to cell respiration

b.

Fructose di-phosphate accumulation inside the cells leading to fermentation

c.

Fructose di-phosphate will accumulate regardless of the medium composition

d.

Fructose di-phosphate will accumulate inside the cells leading to anaerobic respiration

Discuss
Answer: (b).Fructose di-phosphate accumulation inside the cells leading to fermentation
Q55.
Which of the following is best described as secondary metabolite?

a.

Acetic acid produced from the oxidation of ethanol

b.

Ethanol from the fermentation of glucose

c.

Penicillin

d.

Citric acid from the partial oxidation of glucose

Discuss
Answer: (c).Penicillin
Q56.
A microorganism which is subjected to the Crabtree effect is most likely to

a.

ferment in the presence of low concentrations of sugar and dissolved oxygen

b.

respire in the presence of low sugar and high dissolved oxygen concentrations

c.

ferment in the presence of high concentrations of sugar and dissolved oxygen

d.

respire in the presence of high sugar and low dissolved oxygen concentrations

Discuss
Answer: (c).ferment in the presence of high concentrations of sugar and dissolved oxygen
Q57.
When the product formation is approximately equal to the rate of cell growth, the pattern of product formation is termed as

a.

uncoupled

b.

growth associated

c.

non-growth associated

d.

metabolically uncoupled

Discuss
Answer: (b).growth associated
Q58.
Which of the following would be correct concerning the concentration of biomass (X). growth limiting substrate (S) and product (P) in a chemostat when the cells have been washed out?

a.

X,S and P will be zero

b.

X,S and P can not be predicted for the above condition

c.

X and P will be zero while S is equal to the substrate concentration in feed

d.

None of the above

Discuss
Answer: (c).X and P will be zero while S is equal to the substrate concentration in feed
Q59.
Pseudomonas aeruginosa has a maximum specific growth rate of 0.8 h­¹ in a medium with glucose as a growth limiting substrate. To prevent wash out, the dilution rate must be set to

a.

greater than 0.8 h­¹

b.

less than 0.8 h­¹

c.

equal to 0.8 h­¹

d.

1.6 h­¹

Discuss
Answer: (b).less than 0.8 h­¹
Q60.
In a glucose-yeast extract medium, Lactococcus lactis has a maximum specific growth rate (um) of 1.23 h­¹. What would be the specific growth rate of this organism at steady state in a 4 litre reactor being fed at 2 litres per hour?

a.

0.5 h­¹

b.

1.2 h­¹

c.

2.4 h­¹

d.

4 h­¹

Discuss
Answer: (a).0.5 h­¹
Page 6 of 7