biology

• When the temperature is increased, the active site of an enzyme changes shape and can no longer fit its substrate.
• An enzyme's active site should be complementary to its substrate for them to catalyse a reaction.
• An enzyme is a biological catalyst which speeds up the rate of a chemical reaction.
• Enzymes don't get used up in the catalysing process.
• In the induced-fit model, the active site of an enzyme changes slightly when it binds to the substrate so they are better able to react together.
• The lock-and-key model suggests that the active site of an enzyme has a fixed shape that matches exactly with the substrate.
• The lock-and-key model suggests that the active site is fixed and the substrate must match it exactly.
• Enzymes are specific because they only work with one type of molecule (substrate).