Biology 9700 · AS & A Level · Mode of action of enzymes

Mode of action of enzymes — practice question

The graph illustrates the effect of an enzyme on a reaction. Which combination identifies X, Y and Z?

  • AX: catalysed reaction; Y: uncatalysed reaction; Z: energy lost by product
  • BX: catalysed reaction; Y: uncatalysed reaction; Z: total energy lost during reaction
  • CX: uncatalysed reaction; Y: catalysed reaction; Z: energy gained by product
  • DX: uncatalysed reaction; Y: catalysed reaction; Z: total energy change during reaction

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