BI-1342
Effect of temperature and pH on enzymes
Biology · Secondary 4 · Medium · Effect of temperature and pH on enzymes
A scientist measures the rate of an enzyme reaction at pH 3, 5, 7 and 9. The highest rate is at pH 7. What happens to the enzyme when the pH is changed from 7 to 3?
- The enzyme’s active site becomes more complementary to the substrate.
- The enzyme is denatured because its active site changes shape.
- The enzyme becomes a substrate for another enzyme.
- The enzyme’s temperature increases, so it works faster.
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