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CAIE A-Level Biology 3.2.1 Factors Affecting Enzyme Reaction Rate

Practise explaining temperature, pH and concentration effects through collisions or active-site shape, then comparing initial gradients, plateaus and values with units.

Syllabus
2028–2030
Course
Biology 9700
Level
AS

Exam points

  • explain rising rate through more frequent successful collisions before limiting effects
  • explain extreme temperature or pH through altered bonding and active-site conformation
  • compare curves using initial gradients, plateaus and quoted values with correct units

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