1. Enzymes

2. Enzymes: Proteins that increase the rate of chemical reactions
Enzymes are needed for ALL biochemical reactions
Building up molecules, breaking down and reorganizing molecules
Enzymes are called biological catalysts
Speed up reactions by lowering the activation energy
Enzymes
Reusable (unlimited use unless damaged)
Specific (only work with certain molecules/ reactions)
Enzymes are damaged by pH and temperature
High pH and High temperature
Causes change in the enzyme’s shape—can no longer bind or do its job!

3. Enzyme Function
Enzymes have active sites where the substrate (reactant) binds/fits into the enzyme
When the substrate and active site bind, the enzyme changes shape
causing a reaction to happen

4. Enzyme Function
Once the reaction occurs the substrate no longer fits in the enzyme and is released as product
Enzyme returns to original shape ready to be reused again