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Home Biochemical Engineering Enzymes and Kinetics See What Others Are Saying!
  • Question
  • A noncompetitive inhibitor of an enzyme-catalyzed reaction


  • Options
  • A. increases KM and increases Vmax
  • B. increases KM and reduces Vmax
  • C. reduces KM and increases Vmax
  • D. reduces KM and reduces Vmax

  • Correct Answer
  • increases KM and reduces Vmax 


  • More questions

    • 1. Discoloration can be achieved by using

    • Options
    • A. sulphloydryl oxidase
    • B. proteases
    • C. anthocyanase
    • D. all of these
    • Discuss
    • 2. 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
    • 3. 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
    • 4. The most commonly employed cross-linked polymer is the

    • Options
    • A. polyacrylamide gel
    • B. collagen
    • C. celluloses
    • D. cation exchange resin
    • Discuss
    • 5. 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
    • 6. For glucose isomerization by immobilized enzyme, the reactor generally used is

    • Options
    • A. CSTR
    • B. plug flow
    • C. packed bed
    • D. fluidized bed
    • Discuss
    • 7. If the viscosity of a fluid decreases with the length of time that it is being mixed, then this fluid is

    • Options
    • A. newtonian
    • B. rheopectic
    • C. viscoelastic
    • D. thixotropic
    • Discuss
    • 8. The SI unit for viscosity is

    • Options
    • A. kg.m-1.s-1
    • B. kg.m-2.s-2
    • C. kg.m-3.s-1
    • D. kg.m-1.s-2
    • Discuss
    • 9. The support material for immobilization of cells of Bacillus subtilis is

    • Options
    • A. ion exchange resins
    • B. gelatin
    • C. Anthracite
    • D. agarose and carbodiimide
    • Discuss
    • 10. If biomass yields are constant, then the biomass productivity of a culture grown in continuous reactor will

    • Options
    • A. always decrease with dilution rate
    • B. increase with dilution rate until washout
    • C. remain constant irrespective of the dilution rate
    • D. decrease with dilution rate until washout
    • Discuss


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