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Rate: Enzyme Concentration (CIE A Level Biology)

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Cara Head

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Rate: Enzyme Concentration

  • Enzyme concentration affects the rate of reaction
  • The higher the enzyme concentration in a reaction mixture, the greater the number of active sites available and the greater the likelihood of enzyme-substrate complex formation
  • As long as there is sufficient substrate available, the initial rate of reaction increases linearly with enzyme concentration
  • If the amount of substrate is limited, at a certain point any further increase in enzyme concentration will not increase the reaction rate as the amount of substrate becomes a limiting factor

Enzyme Concentration Diagram

The effect of enzyme concentration on an enzyme-catalysed reaction, downloadable AS & A Level Biology revision notes

The effect of enzyme concentration on the rate of an enzyme-catalysed reaction

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Cara Head

Author: Cara Head

Cara graduated from the University of Exeter in 2005 with a degree in Biological Sciences. She has fifteen years of experience teaching the Sciences at KS3 to KS5, and Psychology at A-Level. Cara has taught in a range of secondary schools across the South West of England before joining the team at SME. Cara is passionate about Biology and creating resources that bring the subject alive and deepen students' understanding