Biology 9700 · AS & A Level · Factors that affect enzyme action

Factors that affect enzyme action — practice question

The graph illustrates how substrate concentration affects the reaction rates of three enzymes, X, Y, and Z. What is the correct sequence of the affinity of these enzymes for their substrates, beginning with the enzyme that has the greatest affinity?

  • AX → Y → Z
  • BX → Z → Y
  • CY → X → Z
  • DZ → X → Y

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