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

The gas exchange system — practice question

Which effects arise from paralysis of cilia caused by smoking?

  • A1 and 2
  • B1 and 4
  • C2 and 3
  • D3 and 4

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