BI-1269
Effect of temperature and pH on enzymes
Biology · Secondary 4 · Hard · Effect of temperature and pH on enzymes
A student investigates how temperature affects the rate of starch digestion by amylase. She measures the time taken for starch to be completely broken down at 10 °C, 25 °C, 37 °C and 60 °C. At which temperature will she most likely observe the fastest digestion, and why?
- 37 °C, because this is close to the optimum temperature of human amylase.
- 10 °C, because low temperatures always speed up enzyme activity.
- 25 °C, because room temperature is always the optimum for enzymes.
- 60 °C, because higher temperatures always increase enzyme activity without limit.
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