Question

The respiratory quotient during cellular respiration would depend upon

• A. Amount of $C{O}_2$ released
• B. Amount of $O_2$ utilized
• C. The nature of enzyme in invoked
• D. Nature of substrate
• E. Both (a) and (b)

Answer 1

The correct option is D Nature of substrate

The respiratory quotient (R.Q) is the ration of the volume of the CO${}_2$ released to the volume of the O${}_2$ 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'.