(a(i))[2]
Compare Student A’s results with the class averages.
(a(ii))[2]
Calculate the percentage increase in breathing rate from resting to running for student A. Give your answer to the nearest whole number.
(b)[2]
State two ways in which inspired air and expired air differ in composition.
(c)[3]
Fig. 2.2 is a diagram of the human gas exchange system. Complete Fig. 2.2 by adding these labels in the spaces provided: alveoli, bronchus, bronchiole, diaphragm, trachea.
(d)[2]
A large surface area is a feature of gas exchange surfaces. State two other features of gas exchange surfaces.