Question

Define RQ. What is RQ value for fats?

Answer 1

Respiratory Quotient (R.Q.):-

1. Respiratory Quotient (R.Q.) is defined as the ratio of carbon dioxide released and the oxygen used during the process of respiration.
2. The respiratory quotient (R.Q.) is also referred to as the respiratory ratio. The normal Respiratory Quotient (R.Q.) ranges between 0.7 and 1.0

$RQ=\frac{VolumeofCarbonDioxideProduced}{VolumeofOxygenConsumed}$

1. The respiratory quotient or RQ value of carbohydrates is approximately 0.7
2. (RQ values for protein and carbohydrate are 0.8, and 1.0, respectively)
3. It is calculated by:
4. For example- RQ is 0.7 during the oxidative breakdown of glycerol palmitate-

$$\begin{gathered} 2C_{51}{H}_{98}{O}_6+145O_2\to 102C{O}_2+98H_{2}O+Energy \\ RQ=\frac{Vol.ofC{O}_2}{Vol.of{O}_2}=\frac{102}{145}=0.7 \end{gathered}$$