BI-1316
Effect of temperature and pH on enzymes
Biology · Secondary 4 · Medium · Effect of temperature and pH on enzymes
An enzyme works best at pH 7. The rate of reaction is measured at different pH values. Which graph best shows the effect of pH on enzyme activity?
- A straight line where rate increases steadily as pH increases
- A straight line where rate decreases steadily as pH increases
- A curve with a maximum rate at pH 7 and lower rates at pH 5 and pH 9
- A flat line showing the same rate at all pH values
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