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2.2 Animal tissues, organs and organ systems

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Question 29
F

A molecule of oxygen is carried in the blood that is returning to the heart from the lungs.

Describe the path taken by this molecule of oxygen from the moment the blood enters the heart until the oxygen reaches a muscle cell in the leg. You should name the chambers and the blood vessels that the blood passes through.

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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

179 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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