Enzymes
- Created by: sxdewinder`
- Created on: 07-05-15 11:57
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- Enzymes
- Enzymes are catalysts produced by living things
- Reactions need to be carefully controlled
- There is a limit to how far you can raise the temperature inside a living creature before its cells start getting damaged
- Living things produce enzymes that act as a biological catalysts
- Enzymes reduce the need for high temperature and we only have enzymes to speed up useful chemical reactions in the body
- 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 and all proteins are made up of chains of amino acids, these chains are folded up into a unique shapes.
- They have special shapes
- Every enzyme has a unique shape that fits onto the substance involved in a reaction
- They usually only catalyse one reaction
- For the enzyme to work, the substance has to fit its special shape. if the substance doesn't match the enzymes shape, then the reaction wont be catalysed.
- They need the right temperature and pH
- Changing the temperature changes the rate of an enzyme - catalyst reaction
- If it gets too hot, some off the bonds holding the enzyme together break, which destroys the enzymes special shape
- This is when it become denatured
- If the pH is too high or low, the pH interferes with the bonds holding the enzyme together
- Enzymes are catalysts produced by living things
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