Enzymes
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?- Created by: cassiarh01
- Created on: 02-04-18 20:22
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- Enzymes
- Enzymes are catalysts
- Reactions in living things are controlled by enzymes
- Enzymes are large proteins
- They speed up reactions inside living things by acting as catalyst
- A catalyst is a substance which increases the speed of reaction, without being changed or used up in the reaction
- Have a special shape
- Every enzyme has an active site with a unique shape
- Lock and Key model
- The substance an enzyme works on is called the substrate
- Need the right temperature
- A higher temp increases the rate at first
- If it gets too hot, some of the bonds holding it together break
- Changes the shape of the enzyme's active site, so the substrate won't fit anymore - enzyme is denatured
- Enzymes have a temp that they work best at - optimum temperature
- Need the right pH
- If it's too high/low it affects the bonds holding it together
- Changes the shape of the active site and denatures the enzyme
- All enzymes have a pH that they work best at - optimum pH
- If it's too high/low it affects the bonds holding it together
- Enzymes are catalysts
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