O-LevelBiologyHuman Nutrition5090/11 · May/June 2010 · Q131 Mark
The graph shows the pH of the saliva in the mouth after eating sugar. When are conditions in the mouth most likely to cause tooth decay? [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.
A0-5 minutes
B5-25 minutes
C25-45 minutes
D45-60 minutes
✓ Correct answer
B: 5-25 minutes
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