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Home ‣ Biochemical Engineering ‣ Immobilized Enzyme See What Others Are Saying!
- Question
If Damkohler number, NDa >>1, the reaction rate is much greater than the mass transfer rate and the overall reaction is controlled by the rate of mass transfer. In this case, the enzyme reaction can be described as (where Csb and Cs are the substrate concentration in bulk of solution and at the immobilized enzyme surface respectively. ks mass transfer coefficient, and a is the surface area of an immobilized enzyme particles)
Options- A. rp = ksa(Csb-Cs)
- B. rp = ksaCsb
- C. rp = ksaCs
- D. rp = ksa(Csb+Cs)
- Correct Answer
- rp = ksaCsb
- 1. Sterilization can be carried out by
Options- A. heat
- B. radiation
- C. chemical agents
- D. all of these Discuss
- 2. 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 Discuss
- 3. 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 Discuss
- 4. 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 Discuss
- 5. Discoloration can be achieved by using
Options- A. sulphloydryl oxidase
- B. proteases
- C. anthocyanase
- D. all of these Discuss
- 6. 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 Discuss
- 7. 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 Discuss
- 8. The most commonly employed cross-linked polymer is the
Options- A. polyacrylamide gel
- B. collagen
- C. celluloses
- D. cation exchange resin Discuss
- 9. 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 Discuss
- 10. For glucose isomerization by immobilized enzyme, the reactor generally used is
Options- A. CSTR
- B. plug flow
- C. packed bed
- D. fluidized bed Discuss
More questions
Correct Answer: all of these
Correct Answer: Pseudo steady state
Correct Answer: the torque required to move an impeller at a set speed
Correct Answer: Teepol
Correct Answer: anthocyanase
Correct Answer: it is easier to clean and sterilize a reactor
Correct Answer: induced fit
Correct Answer: polyacrylamide gel
Correct Answer: it can maintain low ethanol concentrations
Correct Answer: packed bed
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