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Home Biochemical Engineering Enzymes and Application Comments

  • Question
  • Chymosin hydrolyses the bond between


  • Options
  • A. Alanine and glycine
  • B. Phenyl alanine and methonine
  • C. Glutamic acid and alanine
  • D. Alanine and phenyl alanine

  • Correct Answer
  • Phenyl alanine and methonine 


  • Enzymes and Application problems


    Search Results


    • 1. Which of the following mainly serve to convert starch into high fructose corn syrup (HFCS)?

    • Options
    • A. ?-amylase
    • B. Gluco-isomerase
    • C. Gluco-amylase
    • D. all of these
    • Discuss
    • 2. Trichoderma ?-glucanase is reported

    • Options
    • A. to stabilize mashing
    • B. to convert taste fractions of dextrins to fermentable sugars in beer
    • C. to convert starch to dextrin
    • D. all of the above
    • Discuss
    • 3. ?-amylase is

    • Options
    • A. endoenzyme
    • B. exoenzyme
    • C. saccharifying enzyme
    • D. both (b) and (c)
    • Discuss
    • 4. Enzymes act as antimicrobials

    • Options
    • A. by depriving an organism of a necessary metabolite
    • B. by generating a substances toxic to the organism
    • C. by attracting a cell wall component
    • D. all of the above
    • Discuss
    • 5. Milk digestibility is improved by using

    • Options
    • A. RNase
    • B. lactase
    • C. ?-amylase
    • D. none of these
    • Discuss
    • 6. Liquefaction of starch to dextrin is carried out by

    • Options
    • A. ?-amylase
    • B. cellulase
    • C. pectinase
    • D. all of these
    • Discuss
    • 7. The enzyme used to reduce bitterness of grapes commonly contains

    • Options
    • A. ?-L-rhamonosidase
    • B. ?-d-glucosidase
    • C. ?- galactosidase
    • D. both (a) and (b)
    • Discuss
    • 8. The increased air flow rate in bubble column fermenter can cause excessive foaming and high retention of air bubbles in the column which

    • Options
    • A. decreases the productivity of the fermenter
    • B. increases the productivity of the fermenter
    • C. modestly increases the productivity of the fermenter
    • D. does not affect on the productivity
    • Discuss
    • 9. The maximum specific growth rate of an organism depends on

    • Options
    • A. medium composition
    • B. temperature
    • C. pH
    • D. All of these
    • Discuss
    • 10. A higher Ks value of Monod's equation means

    • Options
    • A. greater affinities to substrate
    • B. lower affinities to substrate
    • C. unaffected with the substrate bonding
    • D. lower dissociation constant value
    • Discuss


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