Biochemical Engineering - Fluid Flow

Exercise :: Fluid Flow - Section 1

  • Fluid Flow - Section 1
16. 

The viscous nature of a non-Newtonian fluid

A. remains constant with time and power input
B. changes with the level of power input and/or the length of time during which the fluid is mixed
C. is similar to that of a perfect gas
D. is similar to that of water

Answer: Option B

Explanation:

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17. 

Which of the following compound, if added to a solution will lead to the greatest increase in viscosity?

A. A globular protein
B. Glucose
C. A long chain protein such as albumin
D. Water

Answer: Option C

Explanation:

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18. 

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:

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19. 

Which of the following factors will affect the sensitivity of animal cells to shear conditions?

A. Cell size
B. Availability of nutrients in the medium
C. The presence of shear protectorants in the medium
D. All of the above

Answer: Option D

Explanation:

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20. 

The best described action of Pluronic F68 (non-ionic detergent) in a cell culture medium is that, it

A. acts on the surface properties of the cells and the culture medium
B. provides nutrients for the cells
C. acts as a flocculant
D. acts as a coagulant

Answer: Option A

Explanation:

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