BI-1302
Effect of temperature and pH on enzymes
Biology · Secondary 4 · Medium · Effect of temperature and pH on enzymes
In an experiment, hydrogen peroxide is broken down by the enzyme catalase. The reaction is fastest at pH 7. What happens to the rate of reaction if the pH is changed suddenly to pH 3?
- The rate increases because more hydrogen ions are present.
- The rate stays the same because pH does not affect enzymes.
- The rate decreases because the enzyme becomes denatured.
- The rate decreases only slightly because pH 3 is close to pH 7.
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