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Biochemical Engineering
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Fermentation Kinetics
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Question
Which of the following is incorrect?
Options
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
Correct Answer
STF can't be used for high viscosity medium
More questions
1. Quasi steady state is also known as
Options
A. Michaelis Menten approach
B. Briggs-Haldane approach
C. Pseudo steady state
D. all of the above
Show Answer
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Correct Answer: Pseudo steady state
2. A Brookfield viscometer measures viscosity by determining
Options
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
Show Answer
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Correct Answer: the torque required to move an impeller at a set speed
3. From the following sanitizers which one comes under category of surface active agents?
Options
A. Tetra phosphate
B. Teepol
C. Meta phosphate
D. None of these
Show Answer
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Correct Answer: Teepol
4. Discoloration can be achieved by using
Options
A. sulphloydryl oxidase
B. proteases
C. anthocyanase
D. all of these
Show Answer
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Correct Answer: anthocyanase
5. An internal draft tube is preferrred to an external draft tube because
Options
A. it is easier to clean and sterilize a reactor
B. it is cheaper to build a reactor with an internal draft tube
C. Both (a) and (b)
D. none of the above
Show Answer
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Correct Answer: it is easier to clean and sterilize a reactor
6. The conformational change in an enzyme after the substrate is bound that allows the chemical reaction to proceed, can be explained by
Options
A. induced fit
B. transition
C. fit and fine
D. Pasteur
Show Answer
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Correct Answer: induced fit
7. The most commonly employed cross-linked polymer is the
Options
A. polyacrylamide gel
B. collagen
C. celluloses
D. cation exchange resin
Show Answer
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Correct Answer: polyacrylamide gel
8. Fed batch reactors is used to produce vinegar because
Options
A. it can maintain low ethanol concentrations
B. it can maintain low acetic acid concentrations
C. acetic acid bacteria tend to ferment at high ethanol concentrations
D. all of the above
Show Answer
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Correct Answer: it can maintain low ethanol concentrations
9. For glucose isomerization by immobilized enzyme, the reactor generally used is
Options
A. CSTR
B. plug flow
C. packed bed
D. fluidized bed
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Correct Answer: packed bed
10. If the viscosity of a fluid decreases with the length of time that it is being mixed, then this fluid is
Options
A. newtonian
B. rheopectic
C. viscoelastic
D. thixotropic
Show Answer
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Correct Answer: thixotropic
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More in Biochemical Engineering:
Agitation and Aeration
Downstream Processing
Enzymes and Application
Enzymes and Kinetics
Fermentation Kinetics
Fermentation Reactors
Fluid Flow
Immobilized Enzyme
Sterilization
Water Treatment