The respiratory quotient during cellular respiration would depend upon
A
Amount of CO2 released
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B
Amount of O2 utilized
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C
The nature of enzyme in invoked
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D
Nature of substrate
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E
Both (a) and (b)
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Solution
The correct option is D Nature of substrate The respiratory quotient (R.Q) is the ration of the volume of the CO2 released to the volume of the O2 utilized by a substrate during the process of respiration. It solely depends on the nature of the substrate. The R.Q. reflect the nature of the substrate, for example, R.Q. 1 indicated that glucose is the respiratory substrate.
Hence, the correct answer is 'Nature of substrate'.