(a(i))[1]
Define the term respiratory quotient by stating the relationship between carbon dioxide release and oxygen uptake in respiration.
(a(ii))[1]
For aerobic respiration of the unsaturated fatty acid linoleic acid, the equation is: $\mathrm{C_{18}H_{32}O_2} + \dots \, \mathrm{O_2} \rightarrow 18\mathrm{CO_2} + 16\mathrm{H_2O} + \text{energy}$. Calculate how many molecules of oxygen are used when one molecule of linoleic acid is respired aerobically.
(a(iii))[1]
Calculate the RQ of linoleic acid.
(b)[4]
Describe the results in Fig. 10.2 and suggest reasons for them.