AA 1
Alabama A&M University
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A-level BIOLOGY (7402/1) Paper 1
- Exam (elaborations) • 24 pages • 2023
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A technician investigated the effect of temperature on the rate of an enzyme-controlled
reaction. At each temperature, he started the reaction using the same concentration
of substrate.
Figure 1 shows his results.
Give two other factors the technician would have controlled.
[1 mark]
Draw a tangent on each curve to find the initial rates of reaction.
Use these values to calculate the ratio of the initial rates of reaction at 60 °C : 37 ° C.
Show your working.
[2 marks]
0 1 . 2
0 ...
Exam (elaborations)
A-level BIOLOGY (7402/1) Paper 1
Last document update:
ago
A technician investigated the effect of temperature on the rate of an enzyme-controlled reaction. At each temperature, he started the reaction using the same concentration of substrate. Figure 1 shows his results. Give two other factors the technician would have controlled. [1 mark] Draw a tangent on each curve to find the initial rates of reaction. Use these values to calculate the ratio of the initial rates of reaction at 60 °C : 37 ° C. Show your working. [2 marks] 0 1 . 2 0 ...
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