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  • Question

  • An enzyme has a Km of 4.7 x 10-5M. If the Vmax of the preparation is 22m moles liter-1 min-1, what velocity would be observed in the presence of 2.0 x 10-4M substrate and 5.0 x 10-5M of a competitive inhibitor?


  • Options
  • A. 13.54? moles liter-1min-1
  • B. 6.68? moles liter-1min-1
  • C. 7.57? moles liter-1min-1
  • D. 17.8? moles liter-1min-1

  • Correct Answer
  • 13.54? moles liter-1min-1 

    • More questions

    • 1. 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
    • 2. 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
    • 3. 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
    • 4. Pluronic F68 is added to cell culture media as

    • Options
    • A. a nutrient
    • B. a shear protectorant
    • C. to increase oxygen transfer rates
    • D. all of these
      • Discuss
    • 5. 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
    • 6. The cellular productivity in a continuous stirred tank fermenter (CSTF) increases with an increase in the dilution rate and reaches a maximum value. If the dilution rate is increased beyond the maximum point, the productivity will

    • Options
    • A. decrease abruptly
    • B. increase
    • C. increase drastically
    • D. be zero
      • Discuss
    • 7. Sanitizers used for rubber made equipments are

    • Options
    • A. strong acids
    • B. strong alkalis
    • C. combination of both
    • D. none of these
      • Discuss
    • 8. The viscosity of water at STP is approximately

    • Options
    • A. 0.005 kg.m-1.s-1
    • B. 0.001 kg.m-1.s-1
    • C. 0.003 kg.m-2.s-1
    • D. 0.1 g.cm-1.s-1
      • Discuss
    • 9. The collection efficiency by diffusion increases with

    • Options
    • A. decreasing particle size
    • B. decreasing air velocity
    • C. both (a) and (b)
    • D. increasing particle size
      • Discuss
    • 10. Which of the following activity is possible by transferases?

    • Options
    • A. Transfer of methyl groups
    • B. Transfer of glycosyl group
    • C. Both (a) and (b)
    • D. None of these
      • Discuss

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