If an egg is not fertilised, progesterone concentration falls near the end of the menstrual cycle. Which event follows most directly?
The uterus lining is maintained and FSH remains inhibited.
The uterus lining breaks down and FSH can begin to rise.
The uterus lining thickens and LH immediately triggers ovulation.
The uterus lining is repaired and oestrogen remains permanently high.
62 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.