A contraceptive implant releases progesterone, which inhibits FSH production. Researchers compare the number of mature ovarian follicles in participants using the implant with the number in participants not using hormonal contraception.
Which prediction, with its reason, is correct?
More mature follicles in the implant group, because FSH triggers the release of mature eggs from the ovaries.
The same number of mature follicles in both groups, because FSH maintains the uterus lining instead.
The same number of mature follicles in both groups, because the implant works by stopping sperm reaching an egg.
Fewer mature follicles in the implant group, because FSH causes eggs to mature in the ovaries.
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.