A hormonal skin patch normally releases progesterone, which inhibits FSH. The patch comes off several days early, so FSH is no longer inhibited. How does this increase the chance of pregnancy?
FSH could maintain the lining of the uterus.
FSH could trigger the release of a mature egg.
FSH could help an embryo implant in the uterus.
FSH could cause an egg to mature in 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.