The respiratory quotient (RQ) is a dimensionless ratio used to determine the metabolic state of an organism and identify the chemical substrates undergoing oxidation.
Write down the formula used to calculate the respiratory quotient (RQ) of an organism.
Table 1.1 displays the measured respiratory quotient (RQ) values of a small mammal, the Hazel Dormouse (Muscardinus avellanarius\textit{Muscardinus avellanarius}Muscardinus avellanarius), under three distinct physiological conditions.
| Physiological Condition | Respiratory Quotient (RQ) |
|---|---|
| Condition A: Deep winter torpor (hibernation) | 0.71 |
| Condition B: Active foraging in early autumn | 0.99 |
| Condition C: High-intensity escape flight from a predator | 1.42 |
Using the data in Table 1.1, deduce the primary respiratory substrate being metabolised or the metabolic pathway/type of respiration taking place during:
