Biology 9700 · AS & A Level · The gas exchange system

The gas exchange system — practice question

Which row gives the description of emphysema?

  • Alung tissue: less elastic; total surface area of the alveoli: decreased
  • Blung tissue: less elastic; total surface area of the alveoli: increased
  • Clung tissue: more elastic; total surface area of the alveoli: decreased
  • Dlung tissue: more elastic; total surface area of the alveoli: increased

Worked solution & mark scheme

This 1-mark question has a full step-by-step worked solution and mark scheme.

  • Full mark scheme, point by point
  • Step-by-step worked solution
  • Write your answer & get it marked instantly by AI