- A Equal to 1
- B Less than 1
- C Greater than 1
- D Exactly 0
Correct answer: B. Less than 1
Explanation: Fats are more reduced (less oxidised) than carbohydrates, so more O2 is needed relative to CO2 released during their oxidation, giving RQ < 1.
Concept context
Glycolysis, the Krebs cycle, the electron transport chain, fermentation, and the respiratory quotient. The cellular energy-release counterpart to photosynthesis.