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Life Sciences Paper 1, November 2024, question 2.2.4

Life Sciences P1 · Human reproduction
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The table shows the hormone levels in a healthy adult woman during one menstrual cycle. Day | Oestrogen (pg/mℓ) | Progesterone (ng/mℓ) 4 | 55 | 0,23 8 | 70 | 0,03 10 | 280 | 0,03 12 | 300 | 0,03 14 | 140 | 3,0 16 | 110 | 12,5 20 | 80 | 15,0 24 | 70 | 5,0 28 | 65 | 0,8
2.2.43 marks
Use the table to calculate the percentage increase in the progesterone level from day 16 to day 20 of the cycle. Show ALL your working.

NSCBased on Nov 2024 · Paper 1 · Q2.2.4

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What examiners found

Percentage increase was calculated wrongly, a weakness the previous year’s report had flagged as well.

In our words. Source: Department of Basic Education, NSC 2024 Diagnostic Report, Part 1 (Book 1), Q2.2.4.

Updated