Biochemical Engineering | Sterilization

The highest temperature which appears to be feasible for batch sterilization is

Byadmin July 20, 2022

Question: The highest temperature which appears to be feasible for batch sterilization is
[A].

121°C

[B].

100°C

[C].

105°C

[D].

130°C

Answer: Option A

Explanation:

No answer description available for this question.

Biochemical Engineering | Fermentation Kinetics

A culture in a closed vessel to which no additional medium is added and from which no waste products are removed is called a __________ culture.

Question: A culture in a closed vessel to which no additional medium is added and from which no waste products are removed is called a __________ culture.
[A].

continuous
[B].
batch
[C].
fed-batch
[D].
semi continuous

Answer: Option B

Explanation:

No answer description available for this question.

Read More A culture in a closed vessel to which no additional medium is added and from which no waste products are removed is called a __________ culture.
Biochemical Engineering | Fluid Flow

Pluronic F68 is added to cell culture media as

Question: Pluronic F68 is added to cell culture media as
[A].

a nutrient
[B].
a shear protectorant
[C].
to increase oxygen transfer rates
[D].
all of these

Answer: Option B

Explanation:

No answer description available for this question.

Read More Pluronic F68 is added to cell culture media as
Biochemical Engineering | Fermentation Kinetics

The optical density sometimes drops during the lag phase because

Question: The optical density sometimes drops during the lag phase because
[A].

cells tend to grow without dividing leading to a decrease in the surface area to volume ratio
[B].
of fast cell growth causing them to fill up with DNA
[C].
cells swell up with water
[D].
cells swell up with RNA

Answer: Option A

Explanation:

No answer description available for this question.

Read More The optical density sometimes drops during the lag phase because
Biochemical Engineering | Fluid Flow

A Brookfield viscometer measures viscosity by determining

Question: A Brookfield viscometer measures viscosity by determining
[A].

the shear stress
[B].
the shear rate
[C].
the shear stress and shear rate
[D].
the torque required to move an impeller at a set speed

Answer: Option D

Explanation:

No answer description available for this question.

Read More A Brookfield viscometer measures viscosity by determining
Biochemical Engineering | Fermentation Kinetics

Which of the following statements would be appropriate while comparing bubble column and air lift fermenter of the same size?

Question: 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

Answer: Option D

Explanation:

No answer description available for this question.

Read More Which of the following statements would be appropriate while comparing bubble column and air lift fermenter of the same size?
Agitation And Aeration | Biochemical Engineering

During fermentation, the saturation concentration of oxygen was reduced from 7 ppm. to 1 ppm. Which one of the following conclusions can be drawn?

Question: During fermentation, the saturation concentration of oxygen was reduced from 7 ppm. to 1 ppm. Which one of the following conclusions can be drawn?
[A].

Microbial growth is oxygen limited since the oxygen concentration is lesser than the saturation concentration
[B].
Microbial growth is not oxygen limited since the oxygen concentration is lesser than the saturation concentration
[C].
Experimental error leads to the reduction
[D].
No conclusion can be drawn

Answer: Option D

Explanation:

No answer description available for this question.

Read More During fermentation, the saturation concentration of oxygen was reduced from 7 ppm. to 1 ppm. Which one of the following conclusions can be drawn?

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