O-LevelBiologyTransport in Humans5090/11 · Oct/Nov 2023 · Q141 Mark

The graph shows the changes in lung volume during breathing when a person was at rest and then when they began to exercise. From resting to exercise, the volume of air breathed in at each breath increased from ............. dm³ to ............. dm³. Looking at the graph, which numbers correctly complete the gaps in the sentence?

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Ax: 0.5, y: 3.0

Bx: 0.5, y: 5.0

Cx: 2.0, y: 5.0

Dx: 2.0, y: 5.0

✓ Correct answer

A: x: 0.5, y: 3.0

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Topic: Transport in Humans, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, Oct/Nov 2023 Paper 1 Variant 1, question 14.

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