# Life Sciences Paper 1, November 2024, question 2.2.6

> Explain what causes the progesterone level to stay high instead of falling... Marked mark by mark. Q2.2.6, Life Sciences Paper 1 November 2024, 2 marks.

Canonical: https://sharpkop.co.za/life-sciences/2024-nov-p1/q2-2-6/
Last updated: 2026-11-12

Subject: Life Sciences. Source: Based on Nov 2024 · Paper 1 · Q2.2.6. Marks: 2. Not yet checked by a teacher.

## Question 2.2.6 (2 marks)

In a healthy woman who is not pregnant, the progesterone level in her blood rises after ovulation, peaks at about day 20 of her cycle and then falls sharply to a low level by day 28, as the next period begins.

In a woman who becomes pregnant, the progesterone level does not fall at the end of the cycle.

Explain what causes the progesterone level to stay high instead of falling, in a woman whose egg has been fertilised and has implanted in the uterus.

## Practise it

[Answer this question](https://sharpkop.co.za/life-sciences/2024-nov-p1/q2-2-6/) and see it marked mark by mark, with the reason for every lost mark.

## Related

- [More human reproduction questions](https://sharpkop.co.za/life-sciences/human-reproduction/)
- [More endocrine system and homeostasis questions](https://sharpkop.co.za/life-sciences/endocrine-homeostasis/)
- [Life Sciences Paper 1, November 2024](https://sharpkop.co.za/life-sciences/2024-nov-p1/)
- [Grade 12 Life Sciences past papers](https://sharpkop.co.za/life-sciences/)

Questions are based on National Senior Certificate papers set by the Department of Basic Education. Sharpkop is not affiliated with or endorsed by the Department.