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2.2 Animal tissues, organs and organ systems

2.2 Animal tissues, organs and organ systems

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Question 24

The cellular and sub-cellular components of blood are suspended in a liquid medium as they are transported throughout the human body.

A patient undergoing a routine haematological screening receives the following lab results:

  • Red blood cell count: 4.8×1012 dm−34.8 \times 10^{12} \text{ dm}^{-3}4.8×1012 dm−3 (Normal range: 4.0 to 5.5×1012 dm−34.0 \text{ to } 5.5 \times 10^{12} \text{ dm}^{-3}4.0 to 5.5×1012 dm−3)
  • White blood cell count: 7.2×109 dm−37.2 \times 10^{9} \text{ dm}^{-3}7.2×109 dm−3 (Normal range: 4.0 to 11.0×109 dm−34.0 \text{ to } 11.0 \times 10^{9} \text{ dm}^{-3}4.0 to 11.0×109 dm−3)
  • Platelet count: 75×109 dm−375 \times 10^{9} \text{ dm}^{-3}75×109 dm−3 (Normal range: 150 to 400×109 dm−3150 \text{ to } 400 \times 10^{9} \text{ dm}^{-3}150 to 400×109 dm−3)
a.

Name the liquid component of the blood that transports these cells and other dissolved substances.

[1]
b.

Identify which of the patient's blood components is outside of the normal physiological range.

[1]
c.

Suggest one potential symptom or health risk this patient might experience, and explain how this relates directly to the biological function of the affected component.

[3]
Markscheme

2.2 Animal tissues, organs and organ systems Questions

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

44 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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