alleryThe respiratory quotient (RQ) of a fat-rich seed during germination is closest to
A1.0, the value for carbohydrates
B1.5, above unity
C0.7, well below unity
D2.0, partly anaerobic
Answer & Solution
Correct answer: C. 0.7, well below unity
Fats contain little internal oxygen and need a lot of external O₂ to oxidise.
RQ = CO₂/O₂ comes out near 0.7. Carbohydrate-rich substrates give RQ = 1
pure proteins ≈ 0.9. A value above 1 suggests partial anaerobic respiration (less O₂ consumed).
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