Skip to main content
Back

Inhibition Effects on Reaction Rate quiz

Control buttons has been changed to "navigation" mode.
1/15
  • What are the two main equations used to calculate the initial reaction velocity of an enzyme-catalyzed reaction?
    The Michaelis Menten equation and the Lineweaver Burk equation are used to calculate the initial reaction velocity.
  • What factors are included in the Michaelis Menten and Lineweaver Burk equations in the presence of inhibitors?
    The degree of inhibition factors, alpha and alpha prime, are included in these equations when inhibitors are present.
  • How are inhibition constants (kI and k' I) included in the Michaelis Menten and Lineweaver Burk equations?
    They are indirectly included via the degree of inhibition factors, alpha and alpha prime.
  • What replaces the normal Km and Vmax in the equations when inhibitors are present?
    Apparent Km and apparent Vmax replace the normal Km and Vmax in the presence of inhibitors.
  • How do competitive inhibitors affect the Michaelis Menten and Lineweaver Burk equations?
    For competitive inhibitors, only Km is substituted with apparent Km in the equations.
  • How do uncompetitive inhibitors affect the Michaelis Menten and Lineweaver Burk equations?
    For uncompetitive inhibitors, both Km and Vmax are substituted with their apparent values.
  • How do mixed and noncompetitive inhibitors affect the Michaelis Menten and Lineweaver Burk equations?
    Mixed and noncompetitive inhibitors require substitutions of both apparent Km and apparent Vmax.
  • What is the main takeaway regarding the modification of Michaelis Menten and Lineweaver Burk equations in the presence of inhibitors?
    The equations change depending on the type of inhibitor due to differences in apparent Km and apparent Vmax.
  • What are alpha and alpha prime in the context of enzyme inhibition?
    Alpha and alpha prime are degree of inhibition factors that quantify the effect of inhibitors on reaction velocity.
  • Should students memorize all the modified equations for inhibitors at this stage?
    No, students are encouraged not to memorize all equations now as they will revisit them in future lessons.
  • What is the effect of substituting apparent Km and Vmax in the equations?
    Substituting apparent Km and Vmax allows biochemists to measure inhibitor effects on initial reaction velocity.
  • How can the inhibition constants kI and k' I be defined in relation to alpha and alpha prime?
    Alpha and alpha prime can be defined using the inhibition constants kI and k' I.
  • What is the process for modifying the Michaelis Menten and Lineweaver Burk equations for different inhibitors?
    Simply substitute the normal Km and Vmax with the apparent Km and apparent Vmax for the appropriate inhibitor.
  • What happens to the equations when you take the reciprocal of the Michaelis Menten equation?
    Taking the reciprocal gives the Lineweaver Burk equation, which also reflects changes due to inhibitors.
  • Why are the Michaelis Menten and Lineweaver Burk equations different for each type of inhibitor?
    They are different because the apparent Km and apparent Vmax values are affected differently by each inhibitor type.