Which sentence describes a benign tumour?
The cells invade nearby tissues and then spread around the body
The cells form only in the brain and always press on other organs
The cells are contained in one area and do not invade other tissues
The cells divide slowly and are always completely harmless to health
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.