When the evolution of CO2 is more than the intake of O2, the respired substrate should be
A
Fatty acid.
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B
Organic acid.
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C
Glucose.
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D
Polysaccharide.
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Solution
The correct option is B Organic acid. The respiratory quotient depends upon the type of respiratory substrate used during respiration. When organic acids are metabolised more carbon dioxide is evolved than oxygen consumed. Hence, the value of RQ is more than one.