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CAIE A-Level Biology 3.2 Factors Affecting Enzyme Action Question Bank

Practise enzyme-rate questions by interpreting temperature, pH and substrate graphs, calculating Vmax or Km and distinguishing inhibitor effects.

Syllabus
2028–2030
Course
Biology 9700
Level
AS

Exam points

  • explain temperature, pH or substrate effects using collisions, saturation and active-site shape
  • read Vmax, half Vmax and Km from enzyme-kinetics graphs with correct concentration units
  • distinguish competitive, non-competitive and immobilised-enzyme effects from graph evidence

Covered syllabus points

3.2.1—Effects on enzyme reaction rate3.2.2—Vmax and Km3.2.3—Reversible inhibitors3.2.4—Immobilised enzymes

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