NEET Biology question

Which of the following respiratory substrates requires the highest number of oxygen molecules for its complete oxidation?

(A)Tripalmitin
(B)TrioleinCorrect
(C)Tartaric acid
(D)Oleic acid

Answer: (B)

Solution

Balancing the combustion equations: tripalmitin (C51H98O6) requires 72.5 mol O2 per mole for complete oxidation to CO2 and H2O, while triolein (C57H104O6), having longer (C18) oleic-acid chains, requires 80 mol O2 per mole — more

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Question ID VK-113172