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- Question
Lysozyme is naturally present in
Options- A. egg white
- B. bacteria
- C. tears & milk
- D. all of these
- Correct Answer
- all of these
- 1. An open system in which the growth rate is maintained by adding a nutrient (present in limiting quantities) at the same rate as that medium containing micro-organisms is removed is called
Options- A. manostat
- B. chemostat
- C. turbidostat
- D. culturostat Discuss
- 2. When intracellular enzymes of whole cells are to be used in a bio-conversion process, it is often necessary to____________the cells.
Options- A. permeabilize
- B. lyophilize
- C. heat-kill
- D. denature Discuss
- 3. During the exponential phase the maximum specific growth rate equals specific growth rate as
Options- A. concentration of the growth limiting substrate is much less than the monod constant
- B. concentration of growth limiting substrate is much greater than the monod constant
- C. specific growth rate increases exponentially
- D. concentration of the growth limiting substrate is equal to the monod constant Discuss
- 4. In competitive inhibition a factor is obtained from the measurement of
Options- A. Vmax
- B. KM
- C. Y-intercept in Lineweaver-Burk Plot
- D. None of these Discuss
- 5. If the stirrer speed is too slow, bubbles will accumulate and coalescese under the impeller. This phenomenon is known as a
Options- A. coalesced impeller
- B. flooded impeller
- C. river impeller
- D. dry impeller Discuss
- 6. A system which require less solvent and produces a more concentrated extract phase, is desired with a
Options- A. large distribution coefficients
- B. small distribution coefficients
- C. very small distribution coefficients
- D. constant distribution coefficients Discuss
- 7. Both temporary and permanent hardness of water can be removed on boiling water with
Options- A. calcium hydroxide
- B. sodium carbonate
- C. calcium oxide
- D. calcium carbonate Discuss
- 8. Lysozyme is naturally present in
Options- A. egg white
- B. bacteria
- C. tears & milk
- D. all of these Discuss
- 9. The viscosity of a fluid changes with either stirrer speed or mixing time. But when mixing ceases, the viscosity returns to its original state. This fluid is best described as
Options- A. newtonian
- B. rheopectic
- C. viscoelastic
- D. thixotropic Discuss
- 10. A rheopectic fluid is one in which the viscosity
Options- A. is constant regardless of the stirrer speed or mixing time
- B. changes during mixing but returns to its original state after mixing
- C. increases with mixing time
- D. decreases with mixing time Discuss
More questions
Correct Answer: chemostat
Correct Answer: permeabilize
Correct Answer: concentration of growth limiting substrate is much greater than the monod constant
Correct Answer: KM
Correct Answer: flooded impeller
Correct Answer: large distribution coefficients
Correct Answer: sodium carbonate
Correct Answer: all of these
Correct Answer: viscoelastic
Correct Answer: increases with mixing time
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