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2.2 Animal tissues, organs and organ systems

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Question 84

A person has a long-term condition that causes the walls of the alveoli to become thicker than normal. After several months, a blood test shows that the number of red blood cells in the person's blood has increased.

Suggest why the number of red blood cells in the person's blood has increased.

[2]
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2.2 Animal tissues, organs and organ systems Questions

  1. GCSE
  2. /Biology
  3. /2.2 Animal tissues, organs and organ systems

304 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.

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