O-LevelBiologyRespiration5090/11 · May/June 2020 · Q181 Mark

The graph shows changes in the volume of a person's lungs over a period of two minutes. [Figure 18.1]. What could cause the change in the pattern of the graph between X and Y?

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.

Achanging from running to walking

Bchanging from walking to running

Cdecreased frequency of contractions of the internal intercostal muscles

Ddecreased strength of contractions of the internal intercostal muscles

✓ Correct answer

B: changing from walking to running

Oracle Prep sorts past-paper questions by topic, so you can drill Respiration and see which topics are most likely to come up next.

Topic: Respiration, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, May/June 2020 Paper 1 Variant 1, question 18.

Questions and mark schemes are from past examination papers and remain the copyright of the exam board. How Oracle Prep builds its content