This revision note contains detailed explanations and concise wording and pictures to help users to understand the concept of IGCSE and GCSE Biology 0610 Enzymes.
• Each enzyme has an active site that is a specific shape
• The active site is a complementary shape to its substrate
• The substrate binds to the active site, forming an enzyme-substrate complex
• Bonds are weakened in the substrate
• Activation energy for the reaction is lowered
• Products are released and the enzyme is unchanged
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