A computer simulation displays the concentrations of FSH, LH, oestrogen and progesterone alongside changes in the uterus lining.
| Stage | Observation |
|---|---|
| P | the uterus lining remains thick |
| Q | the uterus lining begins to break down |
Which sequence of hormone concentrations is most likely from stage P to stage Q?
progesterone and oestrogen are low, then both rise
progesterone and oestrogen are high, then both fall
progesterone and oestrogen are high, then both rise further
FSH and LH are high, then both fall
90 exam-style questions on Edexcel GCSE Biology 7.2 Reproductive hormones, covering 7.2.1 Stages of the menstrual cycle, 7.2.2 Hormonal control of the menstrual cycle, 7.2.3 Hormonal contraception, 7.2.4 Evaluating contraception methods, and 7.2.5 Hormones in Assisted Reproductive Technology. Each one has a worked solution and a mark scheme showing where the marks go.