Nicotine and carbon monoxide in tobacco smoke help to harm the cardiovascular system.
(a)[3]
Explain how nicotine and carbon monoxide lead to damage of the coronary arteries.
(b(i))[3]
Explain how the two by-passes shown in Fig. 5.1 are an effective treatment for coronary heart disease.
(b(ii))[3]
The expense of treating heart disease is extremely high. Suggest what governments could do to lower heart disease in the population.
Worked solution & mark scheme
This 9-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Nicotine damages endothelium and raises blood pressure” …