O-LevelBiologyRespiration5090/11 · May/June 2017 · Q191 Mark

An analysis of the composition of expired air is shown. Using only data from the table, what percentage of the expired air is excreted material?

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%

B4.1%

C83.6%

D100%

✓ Correct answer

B: 4.1%

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 2017 Paper 1 Variant 1, question 19.

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