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

Mode of action of enzymes — practice question

The graph illustrates how an enzyme affects a reaction. Which option 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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