Infection with human papillomavirus is a risk factor for cancer of the cervix. In the UK, young people are offered a vaccine against human papillomavirus.
Explain how vaccinating young people against human papillomavirus reduces the number of cases of cancer of the cervix.
Some people who have had the vaccine still develop cancer of the cervix. Suggest one reason why.
179 exam-style questions on AQA GCSE Biology 2.2 Animal tissues, organs and organ systems, covering 2.2.1 The human digestive system, 2.2.2 The heart and blood vessels, 2.2.3 Blood, 2.2.4 Coronary heart disease: a non-communicable disease, 2.2.5 Health issues, 2.2.6 The effect of lifestyle on some non-communicable diseases, and 2.2.7 Cancer. Each one has a worked solution and a mark scheme showing where the marks go.