BI-129
Effect of temperature and pH on enzymes
Biology · Secondary 3 · Hard · Effect of temperature and pH on enzymes
An enzyme works best at pH 7. The rate of reaction decreases when the pH is changed to pH 3. What is the most likely reason?
- The enzyme is denatured and its active site changes shape.
- The substrate is completely used up at pH 3.
- The enzyme concentration becomes zero at pH 3.
- The temperature of the reaction must have decreased.
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