NEET 2019 · BiologyPrevious Year Question
Respiratory Quotient (RQ) value of tripalmitin is
Answer: (B) 0.7. Answer: (B) 0.7.
- A.0.9
- B.0.7✓
- C.0.07
- D.0.09
Correct Answer
(B) 0.7
Solution & Explanation
Answer: (B) 0.7. Solution: Tripalmitin is a fat (fatty-acid substrate), and fats are oxygen-poor relative to carbon so their complete oxidation consumes more O2 than the CO2 released, giving RQ < 1. NCERT works out RQ = 102/145 = 0.7 for tripalmitin; carbohydrates would give RQ = 1, and proteins about 0.9. NCERT: Ch 12, p.164, line ~33: "When fats are used in respiration, the RQ is less than 1".
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