| A | B |
| Enzyme | proteins that speed up a chemical reaction by binding with the substrates and orienting them correctly |
| Substrate | the molecules that bind to an enzyme and are changed into product |
| Product | the molecule that is produced from substrates by an enzyme |
| Denatured | when the enzyme is misshapen so that the substrate and no longer bind, making the enzyme ineffective |
| Active Site | the spot on an enzyme where only a specific substrate can fit |
| Activation Energy | the amount of energy required for a chemical reaction to begin |
| Catalyst | any molecule that increases the speed of a chemical reaction |
| Factors that affect enzyme activity | temperature, pH, amount of substrate available (concentration) |
| lock and key model | describes the specificity between an enzyme and its substrate |