BI-1407
Effect of temperature and pH on enzymes
Biology · Secondary 4 · Hard · Effect of temperature and pH on enzymes
A scientist measures the activity of an enzyme at pH 7. She then repeats the experiment at pH 3 and finds that the rate of reaction is much lower.
Which is the most likely reason for the lower rate at pH 3?
Which is the most likely reason for the lower rate at pH 3?
- The enzyme’s active site is altered so the substrate no longer fits properly.
- The enzyme molecules are completely used up at low pH.
- The substrate concentration becomes zero at pH 3.
- The enzyme is converted into a hormone at low pH.
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