Ana and Ben want to use contraception. They do not want to have children for at least five years.
The Table shows information about four methods of contraception.
Table
| Method | Type of method | Percentage of women who become pregnant in one year with typical use | How it is used | Protects against sexually transmitted infections | Possible side effects |
|---|---|---|---|---|---|
| implant | hormonal: releases progesterone | 0.05 | placed under the skin of the arm by a doctor; lasts 3 years | no | irregular periods, headaches |
| combined pill | hormonal: oestrogen and progesterone | 9 | one pill taken every day | no | headaches, mood changes, small increase in the risk of blood clots |
| male condom | non-hormonal: barrier | 18 | a new condom used every time they have sex | yes | very rare allergy to latex |
| copper coil (IUD) | non-hormonal | 0.8 | placed in the uterus by a doctor; lasts up to 10 years | no | heavier periods |
Evaluate which method of contraception Ana and Ben should use.
Use information from the Table in your answer.
84 exam-style questions on OCR GCSE Biology 3.2 Coordination and control – the endocrine system, covering 3.2.1 Principles of hormonal coordination and control, 3.2.2 Roles of thyroxine and adrenaline, 3.2.3 Hormones in human reproduction, 3.2.4 Interactions of reproductive hormones, 3.2.5 Hormones in contraception, 3.2.6 Hormones in reproductive technologies, 3.2.7 Plant hormones in growth and coordination, 3.2.8 Effects of plant hormones, and 3.2.9 Uses of plant hormones. Each one has a worked solution and a mark scheme showing where the marks go.