# Life Sciences Paper 1, November 2024, question 2.2.3

> In the previous part, you were asked what happens to the uterine lining at... Marked mark by mark. Q2.2.3, Life Sciences Paper 1 November 2024, 2 marks.

Canonical: https://sharpkop.co.za/life-sciences/2024-nov-p1/q2-2-3/
Last updated: 2026-11-12

Subject: Life Sciences. Source: Based on Nov 2024 · Paper 1 · Q2.2.3. Marks: 2. Not yet checked by a teacher.

## Question 2.2.3 (2 marks)

Hormone levels in a healthy woman over one menstrual cycle:
Day 4: oestrogen 55 pg/mℓ, progesterone 0,23 ng/mℓ
Day 8: oestrogen 70 pg/mℓ, progesterone 0,03 ng/mℓ
Day 10: oestrogen 280 pg/mℓ, progesterone 0,03 ng/mℓ
Day 12: oestrogen 300 pg/mℓ, progesterone 0,03 ng/mℓ
Day 14: oestrogen 140 pg/mℓ, progesterone 3,0 ng/mℓ
Day 16: oestrogen 110 pg/mℓ, progesterone 12,5 ng/mℓ
Day 20: oestrogen 80 pg/mℓ, progesterone 15,0 ng/mℓ
Day 24: oestrogen 70 pg/mℓ, progesterone 5,0 ng/mℓ
Day 28: oestrogen 65 pg/mℓ, progesterone 0,8 ng/mℓ

In the previous part, you were asked what happens to the uterine lining at the end of the cycle (days 24 to 28). Using figures from the table, give a reason for that outcome by linking the hormone trend to the events in the pituitary gland.

## Practise it

[Answer this question](https://sharpkop.co.za/life-sciences/2024-nov-p1/q2-2-3/) and see it marked mark by mark, with the reason for every lost mark.

## Related

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- [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/)

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