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Biology AQA 3.1.2 Enzyme Properties
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- 1Enzyme structureEnzymes are proteins, the tertiary structure is the twisting of dna and multiple chains, this causes the active sites shape
- 2Effect of Temperature on EnzymesHot: Causes enzymes to denature because an increase in kinetic energy causes bonds to break.
Medium: 37oc is optimum temperature for enzyme activity.
Cold: Causes Enzymes to denature, no kinetic energy so no rate of reaction - 3effect of Competitive inhibitorsThese inhibitors have similar structure to the substrate which compliments the active site, it causes the energy to have a slower rate of reaction because more sites are filled up.
- 4effect of non-competitive inhibitorsThese attach to the enzymes at different places to the active site and causes them to lose shape so that they are not able to bind to the substrate
- 5Effect of PH on enzymesevery enzyme has an optinum Ph.
a change in Ph alters Amino chain and causes the active site to alter.
A change in PH affects bonds. - 6Effect of Substrate concentration on Enzymes.Low: A slow rate of reaction because not all enzyme-substrate complexes have been formed.
Medium: All active sites are filled up so the rate of reaction is at its optimum.
High:All the active sites are already filled up so it has no effect on the rate of reaction
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- Biology Unit 1 As level revision, Enzyme Properties
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- evie.daines
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