BI-106
Effect of temperature and pH on enzymes
Biology · Secondary 3 · Medium · Effect of temperature and pH on enzymes
A student investigates the effect of pH on an enzyme that digests starch. She tests the enzyme at pH 3, 5, 7 and 9 and finds that the fastest digestion occurs at pH 7. Which change will most likely DECREASE the rate of reaction?
- Changing the pH from 7 to 6
- Changing the pH from 7 to 9
- Keeping the pH at 7 but doubling enzyme concentration
- Keeping the pH at 7 but warming from 25 °C to 37 °C
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