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5.3 Hormonal coordination in humans

5.3 Hormonal coordination in humans

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Question 21
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Table 1 gives information about three different methods of contraception.

Table 1

Method of contraceptionNumber of pregnancies per 100 women in one yearFeatures and possible side effects
Hormonal Intrauterine System (IUS)0.20.20.2Lasts for up to 555 years; releases progestogen directly into the uterus; can cause irregular bleeding or lighter periods.
Combined Contraceptive Patch999Applied to skin and changed weekly; releases estrogen and progestogen; can cause skin irritation or headaches.
Diaphragm with spermicide121212Placed over the cervix before sex; contains no hormones; can cause vaginal irritation or urinary tract infections.

A woman is choosing a contraceptive method. She wants a method that:

  • has a very low pregnancy rate (fewer than 111 pregnancy per 100 women per year)
  • does not use estrogen (due to a family history of blood clots)
  • does not require weekly maintenance or preparation immediately before sex
a.

Identify which method of contraception from Table 1 best meets all of her requirements.

[1]
b.

Suggest two disadvantages of the chosen method, using information from Table 1 and your own knowledge.

[4]
Markscheme

5.3 Hormonal coordination in humans Questions

  1. GCSE
  2. /Biology
  3. /5.3 Hormonal coordination in humans

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.

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