Worksheets3. Gas Exchange
Total questions: 10
Worksheet time: 3mins
Identify the structure labelled A in the diagram
Alveolus
Bronchus
Terminal bronchiole
Capillary
Which of the labels is pointing to the plasma?
B
C
D
E
Which of the features allows the oxygen to dissolve before diffusing across the alveolar wall?
B
C
D
E
What is the percentage of oxygen in inspired air?
0.4
4
16
21
What is the percentage of carbon dioxide in expired air?
0.4
4
16
21
Which alveolus adaptation maximises gaseous exchange by maintaining a concentration gradient?
Large surface area
Moist lining
Rich blood supply
Thin wall
Which letter show the diffusion of carbon dioxide during gaseous exchange?
X
Y
Which gas within inspired air has a concentration of 78%?
Carbon dioxide
Nitrogen
Oxygen
Water vapour
What chemical is used to detect the presence of carbon dioxide?
Acid
Alkali
Lime water
Water
In which flask would the lime water be more cloudy?
A
B
