O-LevelBiologyRespiration5090/12 · May/June 2022 · Q191 Mark

The graphs show the depth and rate of breathing in an individual doing four different levels of activity. The same scale for volume is used in each graph. Which graph shows the individual being most active?

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A[Graph A showing moderate volume and moderate frequency breathing]

B[Graph B showing high volume and high frequency breathing]

C[Graph C showing high volume and low frequency breathing]

D[Graph D showing low volume and low frequency breathing]

✓ Correct answer

B: [Graph B showing high volume and high frequency breathing]

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Topic: Respiration, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, May/June 2022 Paper 1 Variant 2, question 19.

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