Two adults smoke the same number of cigarettes each day. One develops cardiovascular disease and the other does not.
Which statement best explains this difference?
Smoking affects the lungs but not the cardiovascular system.
Smoking causes cardiovascular disease only when it is inherited.
Other risk factors remove the effects of smoking completely.
Other risk factors can differ between the two adults.
44 exam-style questions on Edexcel GCSE Biology 5.4 Non-communicable diseases, covering 5.4.1 Interaction of factors in non-communicable disease, 5.4.2 Lifestyle factors and non-communicable disease, and 5.4.3 Treatments for cardiovascular disease. Each one has a worked solution and a mark scheme showing where the marks go.