logo

CuriousTab

CuriousTab

Discussion


Home Biochemical Engineering Enzymes and Kinetics Comments

  • Question
  • When [S] = 0.1 *KM, the velocity of an enzyme catalyzed reaction is about:


  • Options
  • A. 0.1 * Vmax
  • B. 0.3 * Vmax
  • C. 0.5 * Vmax
  • D. 0.7 * Vmax

  • Correct Answer
  • 0.1 * Vmax 


  • Enzymes and Kinetics problems


    Search Results


    • 1. Most enzymes work by

    • Options
    • A. increasing energy of activation
    • B. decreasing energy of activation
    • C. not affecting energy of activation
    • D. none of the above
    • Discuss
    • 2. Which of the following physical method is used as germicidal in modern time for the treatment of drinking water?

    • Options
    • A. Chlorination
    • B. Treating with potassium permagnate
    • C. UV radiation
    • D. Treating with bleaching powder
    • Discuss
    • 3. Calgon is used for removal of

    • Options
    • A. sodium carbonate
    • B. permanent hardness of water
    • C. potassium carbonate
    • D. none of these
    • Discuss
    • 4. Temporary hardness of water is caused by the presence of

    • Options
    • A. chlorides of calcium and magnesium
    • B. sulfates of calcium and magnesium
    • C. bicarbonates of calcium and magnesium
    • D. carbonates of sodium and potassium
    • Discuss
    • 5. Temporary hardness of water may be removed by adding

    • Options
    • A. calcium hydroxide
    • B. calcium carbonate
    • C. calcium chloride
    • D. sodium bicarbonate
    • Discuss
    • 6. Which of the following refers to pseudo steady state?

    • Options
    • A. d(CE)/dt = 0
    • B. d(Cp)/dt = 0
    • C. d(CES)/dt = 0
    • D. d(Cs)/dt = d(CES)/dt
    • Discuss
    • 7. In the steady state the material balance equation for any component of a system is

    • Options
    • A. rate of addition + rate of removal - rate of formation = 0
    • B. rate of addition - rate of removal + rate of formation = 0
    • C. rate of addition + rate of removal + rate of formation = 0
    • D. none of the above
    • Discuss
    • 8. The equation for the rate of product formation for simple enzyme reaction is given by (Where rmax, maximum reaction rate, Cs substrate concentration, Cp product concentration ES, CES enzyme-substrate concentration)

    • Options
    • A. rp = rmax Cs/(Km+Cs)
    • B. rp= rmax CES/(Km+ CES)
    • C. rp = rmax Cs/(Km+CES)
    • D. rp = rmax Cs/(Km+Cp)
    • Discuss
    • 9. Which of the following statement(s) regarding enzymes, is/are false?

    • Options
    • A. Enzymes are always proteins that function as catalysts
    • B. Enzymes provide activation energy for reactions
    • C. Enzyme activity can be regulated
    • D. Enzymes may be used many times for a specific reaction
    • Discuss
    • 10. The slope of Lineweaver Burk plot for Michaelis Menten equation is

    • Options
    • A. Vmax/Km
    • B. Km/Vmax
    • C. 1/Km
    • D. Km.Vmax
    • Discuss


    Comments

    There are no comments.

Enter a new Comment