Class 11 Biology - Chapter Respiration in Plants NCERT Solutions | Define RQ. What is its value for fats?

Welcome to the NCERT Solutions for Class 11th Biology - Chapter Respiration in Plants. This page offers a step-by-step solution to the specific question from Excercise ".$ex_no." , Question 10: define rq what is its value for fats....
Question 10

Define RQ. What is its value for fats?

Answer

Respiratory quotient (RQ) or respiratory ratio can be defined as the ratio of the volume of CO2 evolved to the volume of O2 consumed during respiration. The value of respiratory quotient depends on the type of respiratory substrate. Its value is one for carbohydrates. However, it is always less than one for fats as fats consume more oxygen for respiration than carbohydrates.

It can be illustrated through the example of tripalmitin fatty acid, which consumes 145 molecules of O2 for respiration while 102 molecules of CO2 are evolved. The RQ value for tripalmitin is 0.7.

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