The Figure shows how hormones released by the pituitary gland and by the ovary interact during the menstrual cycle.
Hormone 1 causes an egg to mature.
Figure

Name hormone 1 and hormone 4.
Explain why it is important that hormone 4 inhibits the pituitary gland in the second half of the cycle.
The combined contraceptive pill contains hormones similar to hormone 2 and hormone 4.
Use the Figure to explain how the combined pill prevents pregnancy.
Suggest why a pill containing only hormone 1 would not be a suitable contraceptive.
48 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.