BI-1235
Effect of temperature and pH on enzymes
Biology · Secondary 4 · Medium · Effect of temperature and pH on enzymes
A piece of raw liver is placed into hydrogen peroxide solution at pH 7 and bubbles of oxygen are produced rapidly. When the same experiment is repeated at pH 3, very few bubbles are seen. What is the best explanation?
- Catalase is denatured at pH 3, so its activity is greatly reduced.
- Catalase concentration is higher at pH 3, so less oxygen is produced.
- Hydrogen peroxide cannot diffuse into the liver at pH 3.
- Catalase is not needed to break down hydrogen peroxide at pH 7.
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