Question

R.Q. is less than one when the respiratory substrate is

• A. Sucrose
• B. Fat
• C. Glucose
• D. Organic acid

Answer 1

The correct option is B Fat

RQ or respiratory question is the volume of carbon dioxide released the volume of oxygen taken up in the respiration.

When the respiratory substance is fats then the RQ is usually less because the volume of carbon dioxide evolved and oxygen absorbed is not equal.

Glucose and sucrose are both carbohydrates they have RQ of 1 and when organic acids are as a respiratory substance their RQ is greater than one.

So, the correct option is 'Fats'