A-Level Biology OCR A
Active Substrate Enzyme Competetive Inhibitor Rate Site Molecules
| Front |
Explain how a competetive inhibitor affects the rate of an enzyme-controlled reaction. |
| Back |
Effect of competetive inhibitors:- Molecule/part of molecule with similar shape to substrate fits into the active site of the enzyme
- This blocks substrate from entering active site, preventing enzyme from catalysing
- Enzyme cant carry out its function - inhibited
- Substrate and inhibitor molecules will compete to bind to active sites
- Number of molecules binding to active site in given time reduced, rate of reaction slowed
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A-Level Biology OCR A