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A-LevelBiologyEnzymes9700/12 · May/June 2021 · Q131 Mark

The graph shows the energy levels involved in an enzyme-catalysed reaction. Substrate molecules X and Y combine to give product Z. Which arrow shows the reduction in activation energy due to the enzyme? [Figure 13.1]

This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.

A[Arrow A in Figure 13.1]
B[Arrow B in Figure 13.1]
C[Arrow C in Figure 13.1]
D[Arrow D in Figure 13.1]

✓ Correct answer

B: [Arrow B in Figure 13.1]

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About this question

Topic
Enzymes, A-Level Biology (syllabus 9700). Multiple choice, 1 mark.
Source
A-Level Biology, May/June 2021 Paper 1 Variant 2, question 13.

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