BI-2145

Enzyme experiments

Biology · Secondary 4 · Hard · Enzyme experiments

In an experiment, a student measures the time taken for a catalase-soaked paper disc to rise in hydrogen peroxide. For one concentration, the two readings are 18 s and 22 s. What is the mean time taken, to the nearest whole number, and the rate of reaction in

\text{s}^{-1}

using rate

= 1/\text{mean time}

20 s and $0.05$ $\text{s}^{-1}$
20 s and $0.5$ $\text{s}^{-1}$
40 s and $0.025$ $\text{s}^{-1}$
10 s and $0.1$ $\text{s}^{-1}$

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