Active Site

Key Stage 4

Meaning

This diagram shows an enzyme, substrate and the active site of the enzyme.

An active site is the part of an enzymes which is where the enzyme interacts with a substrate.

About the Active Site

The active site is shaped to fit with only one substrate so enzymes all have specific roles in an organism.

When an enzyme becomes denatured the substrate can no longer fit into the active site preventing the enzyme from functioning.

References

AQA

Active sites, page 109, GCSE Combined Science Trilogy; Biology, CGP, AQA

Active sites, page 115, GCSE Biology, CGP, AQA

Active sites, page 25, GCSE Combined Science; The Revision Guide, CGP, AQA

Active sites, page 28, GCSE Biology; The Revision Guide, CGP, AQA

Active sites, page 42, GCSE Biology; Third Edition, Oxford University Press, AQA

Active sites, page 49, GCSE Combined Science Trilogy 1, Hodder, AQA

Edexcel

Active site of an enzyme, page 18, GCSE Biology, Pearson, Edexcel

Active site of an enzyme, pages 14, 257, GCSE Combined Science, Pearson Edexcel

Active sites, page 143, GCSE Chemistry, Pearson, Edexcel

Active sites, page 36, GCSE Biology, CGP, Edexcel