Edexcel IGCSE Biology 2.67 Coronary Heart Disease Risk Factors Questions

Interpret data linking smoking, blood pressure, body mass, age and inherited risk to coronary heart disease. Explain how lifestyle and physiological factors can increase the chance of developing CHD.

Syllabus
First assessment 2019
Course
Biology 4BI1

Exam points

  • Identify coronary heart disease risk factors, including smoking, high blood pressure, high-fat or high-salt diet, inactivity, obesity, diabetes, stress, age and inherited risk.
  • Interpret data linking body mass and age, blood pressure, or smoking and risk alleles with coronary heart disease or heart-attack rates; note other variables and study limits.
  • Explain how smoking and high-fat diets can promote coronary artery blockage, while high blood pressure and obesity increase strain on the heart.

Edexcel IGCSE Biology 2.67 Coronary Heart Disease Risk Factors Questions question 1

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The diagram shows the human blood circulation system.

Figure for Question Edexcel IGCSE Biology 2.67 Coronary Heart Disease Risk Factors Questions question 1 — Edexcel IGCSE Biology

Question (a)

(a)

High blood pressure and the presence of certain genes are risk factors for coronary heart disease.

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Question (i)

(i)

Give two other risk factors for coronary heart disease.

1

2

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Question (ii)

(ii)

Scientists compared the relationship between blood pressure and the number of deaths from coronary heart disease in Northern Europe, Eastern Europe and Japan.

The graph shows their results.

Figure for Question (ii) — Edexcel IGCSE Biology

A high blood pressure is considered to be above 130 arbitrary units.
Use the graph and your own knowledge to comment on the causes of death due to coronary heart disease in each region.

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