O-LevelBiologyEnzymes5090/12 · May/June 2022 · Q51 Mark
Amylase is an enzyme that breaks down starch to maltose. Students set up an experiment to investigate the effect of different temperatures on the action of amylase on starch solution. They measured the amount of starch remaining after 30 minutes at different temperatures. Which graph would you expect the students to draw from their results?
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[Graph A showing amount of starch after 30 minutes increasing then decreasing with temperature]
B[Graph B showing amount of starch after 30 minutes decreasing to a minimum then increasing with temperature]
C[Graph C showing amount of starch after 30 minutes decreasing to a minimum then increasing with temperature]
D[Graph D showing amount of starch after 30 minutes increasing and then plateauing with temperature]
✓ Correct answer
C: [Graph C showing amount of starch after 30 minutes decreasing to a minimum then increasing with temperature]
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