Biology 9700 · AS & A Level · Transport of oxygen and carbon dioxide

Transport of oxygen and carbon dioxide — practice question

A mature human body contains about $5\,\text{dm}^3$ of blood, and this blood makes one complete circulation roughly every minute. Each $100\,\text{cm}^3$ of arterial blood contains $19\,\text{cm}^3$ of oxygen. Each $100\,\text{cm}^3$ of venous blood contains $12.5\,\text{cm}^3$ of oxygen. What is the approximate volume in $\text{cm}^3$ of oxygen absorbed per minute in the lungs?

  • A32.5
  • B65
  • C325
  • D950

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