O-LevelBiologyCoordination & Response5090/12 · May/June 2018 · Q361 Mark

A person's basal body temperature is their temperature when they first wake up in the morning. In women, an increase in blood progesterone concentration causes a small rise in basal body temperature. The graph shows one woman's basal body temperature over a period of 28 days. [Figure 36] On which day did the woman ovulate?

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.

Aday 1

Bday 5

Cday 11

Dday 27

✓ Correct answer

C: day 11

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

Topic: Coordination & Response, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, May/June 2018 Paper 1 Variant 2, question 36.

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