Agitation And Aeration | Biochemical Engineering

In aerobic microorganisms cultures radial flow impellers are used because

Byadmin July 19, 2022

Question: In aerobic microorganisms cultures radial flow impellers are used because
[A].

they provide energy efficient high turbulent mixing conditions

[B].

they provide low shear mixing conditions

[C].

they provide high shear mixing conditions

[D].

they ensure that bubble size is maximized leading to high oxygen transfer rates

Answer: Option C

Explanation:

No answer description available for this question.

Biochemical Engineering | Sterilization

The interception efficiency can be expressed as (where dp is the particle diameter and Dc cylindrical collection diameter)

Question: The interception efficiency can be expressed as (where dp is the particle diameter and Dc cylindrical collection diameter)
[A].

dp/Dc
[B].
dp x Dc
[C].
dp/Dc x 100
[D].
dpDc/100

Answer: Option A

Explanation:

No answer description available for this question.

Read More The interception efficiency can be expressed as (where dp is the particle diameter and Dc cylindrical collection diameter)
Biochemical Engineering | Water Treatment

Application of quaternary ammonium compounds as sanitizing agents tends to

Question: Application of quaternary ammonium compounds as sanitizing agents tends to
[A].

favor gram positive bacteria
[B].
decrease gram positive bacteria
[C].
increase the percentage of gram(-)ve rods on utensils
[D].
none of the above

Answer: Option C

Explanation:

No answer description available for this question.

Read More Application of quaternary ammonium compounds as sanitizing agents tends to
Biochemical Engineering | Downstream Processing

Start up expenses in a fermentation industry varies from

Question: Start up expenses in a fermentation industry varies from
[A].

0-5% of the capital cost
[B].
10-15% of the capital cost
[C].
5-10% of the capital cost
[D].
15-20% of the capital cost

Answer: Option C

Explanation:

No answer description available for this question.

Read More Start up expenses in a fermentation industry varies from
Biochemical Engineering | Fluid Flow

The approach which is commonly used to determine the level of damage to animal cells in a culture medium is to monitor

Question: The approach which is commonly used to determine the level of damage to animal cells in a culture medium is to monitor
[A].

the concentration of lactate in the medium
[B].
the level of lactate oxidase activity in the medium
[C].
the level of lactate dehydrogenase activity
[D].
the level of lactase activity in the medium

Answer: Option C

Explanation:

No answer description available for this question.

Read More The approach which is commonly used to determine the level of damage to animal cells in a culture medium is to monitor
Biochemical Engineering | Fermentation Kinetics

Which of the following is not correct for the Monod model and the Michaelis Menten Model?

Question: Which of the following is not correct for the Monod model and the Michaelis Menten Model?
[A].

The Michaelis Menten Model was derived from a curve fitting exercise
[B].
The Michaelis Menten model was derived from an analysis of the mechanism of microbial growth
[C].
The Monod model was derived from an analysis of the mechanism of microbial growth
[D].
All of the above

Answer: Option C

Explanation:

No answer description available for this question.

Read More Which of the following is not correct for the Monod model and the Michaelis Menten Model?
Biochemical Engineering | Enzymes And Kinetics

For an enzyme that displays Michaelis-Menten kinetics, the reaction velocity (as a fraction of Vmax) observed at [S] = 2 KM will be

Question: For an enzyme that displays Michaelis-Menten kinetics, the reaction velocity (as a fraction of Vmax) observed at [S] = 2 KM will be
[A].

0.09
[B].
0.33
[C].
0.66
[D].
0.91

Answer: Option C

Explanation:

No answer description available for this question.

Read More For an enzyme that displays Michaelis-Menten kinetics, the reaction velocity (as a fraction of Vmax) observed at [S] = 2 KM will be

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