BI-1252
Effect of temperature and pH on enzymes
Biology · Secondary 4 · Hard · Effect of temperature and pH on enzymes
In an investigation on catalase, potato discs were placed in hydrogen peroxide at different temperatures. The time taken for each disc to float to the surface was recorded. At 20 °C the mean time was 40 s, while at 35 °C the mean time was 16 s. What can be concluded about the rate of enzyme activity at 35 °C compared with 20 °C?
- The rate at 35 °C is 1.5 times that at 20 °C.
- The rate at 35 °C is 2.5 times that at 20 °C.
- The rate at 35 °C is 0.4 times that at 20 °C.
- The rate at 35 °C is the same as at 20 °C.
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