A farmer in rural Guyana noticed that after burning sugar cane fields, workers in the area complained of breathing difficulties. Which part of the respiratory system would be most affected by inhaling smoke particles?

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Question

A farmer in rural Guyana noticed that after burning sugar cane fields, workers in the area complained of breathing difficulties. Which part of the respiratory system would be most affected by inhaling smoke particles?

Accepted Answer

Alveoli — Award 1 mark for identifying that smoke particles can reach and damage the alveoli, reducing gas exchange efficiency. A is incorrect — while the nasal cavity filters some particles, fine smoke particles can bypass this. B is incorrect — the oesophagus is part of the digestive system. D is incorrect — the stomach is not part of the respiratory system.

Answer

Stomach

Answer

Nasal cavity only

Answer

Oesophagus

Answer

Alveoli

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