Biology 9700 · AS & A Level · Movement into and out of cells

Movement into and out of cells — practice question

Carbon dioxide and oxygen diffuse between the air in the alveoli and the blood in the capillaries of the lung. Which partial pressures of these gases would make gaseous exchange possible?

  • A$\text{CO}_2$ in alveolar air: $5.3\ \text{kPa}$; $\text{CO}_2$ in blood: $6.0\ \text{kPa}$; $\text{O}_2$ in alveolar air: $13.3\ \text{kPa}$; $\text{O}_2$ in blood: $13.9\ \text{kPa}$
  • B$\text{CO}_2$ in alveolar air: $5.3\ \text{kPa}$; $\text{CO}_2$ in blood: $6.0\ \text{kPa}$; $\text{O}_2$ in alveolar air: $13.9\ \text{kPa}$; $\text{O}_2$ in blood: $5.3\ \text{kPa}$
  • C$\text{CO}_2$ in alveolar air: $6.0\ \text{kPa}$; $\text{CO}_2$ in blood: $5.3\ \text{kPa}$; $\text{O}_2$ in alveolar air: $13.9\ \text{kPa}$; $\text{O}_2$ in blood: $5.3\ \text{kPa}$
  • D$\text{CO}_2$ in alveolar air: $6.0\ \text{kPa}$; $\text{CO}_2$ in blood: $5.3\ \text{kPa}$; $\text{O}_2$ in alveolar air: $13.3\ \text{kPa}$; $\text{O}_2$ in blood: $13.9\ \text{kPa}$

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