A drug prevents artificial oestrogen and progesterone in a combined contraceptive pill from inhibiting the pituitary gland. The ovaries still respond to FSH and LH.
Which change would most directly reduce the contraceptive effect?
FSH and LH can be released, allowing egg maturation and ovulation.
FSH and LH remain inhibited, preventing egg maturation and ovulation.
FSH and LH remain inhibited, allowing egg maturation and ovulation.
FSH and LH can be released, preventing egg maturation and ovulation.
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.