Question

Respiratory quotient during cellular respiration depends on ______.

• A. Nature of enzymes
• B. Nature of substrate
• C. Amount of $C{O}_2$ released
• D. Amount of $O_2$ utilised

Answer 1

Answer: (C), (D)

Amount of $O_2$ utilised

Respiratory quotient is the ratio of the volume of carbon dioxide evolved to that of oxygen consumed by an organism, tissue, or cell in a given time. Therefore the respiratory quotient depends on both the amount of oxygen utilized and the amount of carbon dioxide generated.