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

Movement into and out of cells — practice question

Through which layers of cells does an oxygen molecule diffuse as it moves from an alveolus into an alveolar capillary?

  • Aalveolus: squamous epithelium; alveolar capillary: squamous epithelium
  • Balveolus: endothelium; alveolar capillary: squamous epithelium
  • Calveolus: squamous epithelium; alveolar capillary: endothelium
  • Dalveolus: endothelium; alveolar capillary: endothelium

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