BI-1270
Effect of temperature and pH on enzymes
Biology · Secondary 4 · Hard · Effect of temperature and pH on enzymes
Two enzymes, X and Y, both catalyse the same reaction. Enzyme X has an optimum temperature of 15 °C, while enzyme Y has an optimum temperature of 37 °C. At 37 °C, which statement about their activities is most likely correct?
- Enzyme Y is more active than enzyme X at 37 °C because 37 °C is Y’s optimum temperature.
- Enzyme X is more active than enzyme Y at 37 °C because X has the lower optimum temperature.
- Both enzymes have the same activity at 37 °C because they catalyse the same reaction.
- Neither enzyme is active at 37 °C because it is above both of their optimum temperatures.
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