Enzymes → Catalysts [Speed up rate of reaction without being changed or used up] [Proteins]
Enzymes are specific to 1 substrate [Molecule that gets broken down]
They use a lock and key model [Enzymes active site is complementary to the substrate shape]
When enzyme and substrate join → Called “Enzyme Substrate Complex”

Enzymes and substrates = Random movement


Eventually temperature gets so high the enzyme gets denatures → Shape of active site gets altered