BI-105
Effect of temperature and pH on enzymes
Biology · Secondary 3 · Medium · Effect of temperature and pH on enzymes
Pepsin is a protease that works best at about 37 °C in the stomach. A sample of pepsin solution is kept at 37 °C for 10 minutes, then heated to 70 °C for another 10 minutes and finally cooled back to 37 °C. What will happen to its activity when protein is added after cooling?
- Its activity returns to normal because the temperature is again 37 °C.
- Its activity becomes higher than before heating.
- Its activity is much lower but slowly recovers over time.
- It shows no activity because it has been denatured.
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