Enzymes
- Created by: isabella newsum
- Created on: 16-11-14 18:49
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- Enzymes
- Acting as Biological Catalysts
- A catalyst is a substance which increases the speed of a reaction without being changed or used up in the reaction
- Enzymes are all proteins- chains of amino acids
- Also act as structural components of tissues, hormones and antibodies
- Special shape to catalyse reactions
- Chemical reactions- split apart or joined together
- Every enzyme has a unique shape that fits onto the substance involved in the reaction
- For the enzyme to work, the substrate has to fit its special shape, if substrate doesn't match enzymes shape, then the reaction wont be catalysed
- Only catalyse one reaction
- For the enzyme to work, the substrate has to fit its special shape, if substrate doesn't match enzymes shape, then the reaction wont be catalysed
- Right Temperature and pH
- Optimum temp. is 37 degrees- enzyme= most active
- Too hot, bonds break, denatures enzyme's special shape
- Too hot, bonds break, denatures enzyme's special shape
- Too high/ low interferes with bonds- changes the shape and denatured the enzyme
- Often pH 7, but pepsin enzyme works best at pH 2
- Optimum temp. is 37 degrees- enzyme= most active
- Acting as Biological Catalysts
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