BI-45
Effect of temperature and pH on enzymes
Biology · Secondary 3 · Medium · Effect of temperature and pH on enzymes
An enzyme that digests fats is tested at different temperatures. At 37 °C it works quickly, but at 70 °C no product is formed. Which statement best explains this result?
- The enzyme is denatured and its active site no longer fits the substrate
- The enzyme has not yet reached its optimum temperature
- The substrate molecules stop moving at high temperature
- The enzyme is used up completely at 37 °C
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