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2.2 Animal tissues, organs and organ systems

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Question 8

Donated red blood cells are given to a patient during an operation. The cells must carry oxygen from the patient's lungs to the patient's body cells.

a.

Name the protein in a red blood cell that binds to oxygen.

[1]
b.

State the name of the substance formed when oxygen binds to this protein in the lungs.

[1]
c.

Red blood cells have a biconcave disc shape and no nucleus. Explain how each of these features helps a red blood cell to transport oxygen efficiently.

[2]
Markscheme

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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