BI-33
Effect of temperature and pH on enzymes
Biology · Secondary 3 · Hard · Effect of temperature and pH on enzymes
The rate of an enzyme-controlled reaction is measured at different temperatures. It increases from 10 °C to 37 °C, then decreases sharply at 60 °C. Why is the rate low at 60 °C?
- The substrate has completely reacted and is used up.
- The enzyme is denatured and its active site no longer fits the substrate.
- The enzyme has frozen and cannot move.
- The pH of the solution becomes neutral.
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