Biology 9700 · AS & A Level · The microscope in cell studies

The microscope in cell studies — practice question

Which parts of the human gas exchange system assist in reducing the effects of carcinogens in tar?

  • Acilia and goblet cells only
  • Bcilia and mucous glands only
  • Cmucous glands and goblet cells only
  • Dmucous glands, goblet cells and cilia

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