Scientists grew pituitary gland cells in nutrient solutions containing different concentrations of oestrogen. They measured the concentrations of FSH and LH released into each solution.
| Oestrogen concentration in solution in nmol/L | FSH concentration in solution in IU/L | LH concentration in solution in IU/L |
|---|---|---|
| 0.10 | 7.8 | 5.2 |
| 1.00 | 2.4 | 31.0 |
Using the results, explain how an oestrogen concentration of 1.00 nmol/L is likely to affect egg maturation and the release of a mature egg from an ovary.
85 exam-style questions on AQA GCSE Biology 5.3 Hormonal coordination in humans, covering 5.3.1 Human endocrine system, 5.3.2 Control of blood glucose concentration, 5.3.3 Maintaining water and nitrogen balance in the body, 5.3.4 Hormones in human reproduction, 5.3.5 Contraception, 5.3.6 The use of hormones to treat infertility (HT only), and 5.3.7 Negative feedback (HT only). Each one has a worked solution and a mark scheme showing where the marks go.