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Home Biochemical Engineering Downstream Processing See What Others Are Saying!
  • Question
  • Which of the following is not the physical method for the cells rupturing?


  • Options
  • A. Milling
  • B. Homogenization
  • C. Ultrasonication
  • D. Enzymatic digestion

  • Correct Answer
  • Enzymatic digestion 


  • More questions

    • 1. Which category of enzymes belongs to class two in the international classification?

    • Options
    • A. Hydrolases
    • B. Ligases
    • C. Transferases
    • D. Isomerase
    • Discuss
    • 2. Which of these proteases is not a cysteine active site protease?

    • Options
    • A. Calpain
    • B. Cathepsin D
    • C. Papain
    • D. None of the above
    • Discuss
    • 3. Enzymes are basically

    • Options
    • A. proteins
    • B. vitamins
    • C. fat
    • D. carbohydrates
    • Discuss
    • 4. Two continuous bioreactors containing the same organisms, fed with the same feed at the same dilution rate were compared. Reactor 1 started with an initial concentration of glucose of 10 g.l-1, while reactor 2 contained 0.1 g.l-1 of glucose at the start of the process then at steady state

    • Options
    • A. the concentration of glucose in reactor 1 would be greater than that in reactor 2
    • B. the concentration of glucose in reactor 1 would be equal to reactor 2
    • C. the concentration of glucose in reactor 1 would always be zero.
    • D. the concentration of glucose in reactor 1 would be less than that in reactor 2
    • Discuss
    • 5. Non-linear relationship between shear stress and shear rate exists in

    • Options
    • A. newtonian fluids
    • B. non-newtonian fluids
    • C. both (a) and (b)
    • D. none of these
    • Discuss
    • 6. Which of the following impellers will provide radial flow?

    • Options
    • A. Paddles
    • B. Flat blade turbines
    • C. Disk flat blade turbines
    • D. All of the above
    • Discuss
    • 7. In antibiotic manufacturing processes, the fermentation time ranges from

    • Options
    • A. 2-3 weeks
    • B. 1-2 weeks
    • C. 4-5 weeks
    • D. 2-4 weeks
    • Discuss
    • 8. Secondary treatment uses __________ to consume wastes.

    • Options
    • A. micro-organisms
    • B. chemicals
    • C. filtration
    • D. none of these
    • Discuss
    • 9. At 25°C, the saturation concentration of oxygen in water is 1.26 mmol/l and the partial pressure of oxygen is 1 atm. The Henry's law constant will be

    • Options
    • A. 0.793atml/mmol
    • B. 0.207atml/mmol
    • C. 1.26 atml/mmol
    • D. 8.74 atml/mmol
    • Discuss
    • 10. Sterilization can be carried out by

    • Options
    • A. heat
    • B. radiation
    • C. chemical agents
    • D. all of these
    • Discuss


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