Biology 9700 · AS & A Level · The gas exchange system
The gas exchange system — practice question
Fig. 6.1 illustrates the first three parts of the human gas exchange system that inhaled air from the outside atmosphere passes through.
(a)[2]
Finish Fig. 6.1 by showing the route air follows during inhalation.
(b)[2]
Breathing in tobacco smoke may cause chronic obstructive pulmonary disease (COPD). COPD is a term that refers to a group of lung diseases.
Name two smoking-related diseases linked to COPD.
Worked solution & mark scheme
This 4-mark question has a full step-by-step worked solution and mark scheme. One marking point: “The sequence is trachea to bronchus to bronchiole to alveolus” …