BI-19
Effect of temperature and pH on enzymes
Biology · Secondary 3 · Hard · Effect of temperature and pH on enzymes
A student investigates the effect of pH on an enzyme. The enzyme works best at pH 7. Which graph best describes the rate of reaction as pH increases from 3 to 11?
- Rate decreases steadily from pH 3 to pH 11.
- Rate increases steadily from pH 3 to pH 11.
- Rate is highest at pH 3 and lowest at pH 11.
- Rate increases from pH 3 to 7, then decreases from pH 7 to 11.
Sign in to check your answer and see the hint and the worked explanation. Free on PrepLab High.