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

The gas exchange system — practice question

Which of the following statements correctly describe the effects of tar in tobacco smoke on the human gas exchange system?

  • Agoblet cells stimulated ✓; mucus glands enlarged ✓; mutations in epithelial cells ✗; cilia activity inhibited ✗
  • Bgoblet cells stimulated ✗; mucus glands enlarged ✓; mutations in epithelial cells ✓; cilia activity inhibited ✓
  • Cgoblet cells stimulated ✓; mucus glands enlarged ✓; mutations in epithelial cells ✓; cilia activity inhibited ✓
  • Dgoblet cells stimulated ✓; mucus glands enlarged ✗; mutations in epithelial cells ✓; cilia activity inhibited ✓

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