Question 6 of 8beginner🧠 RememberVery Short2 marks
Define RQ. What is its value for fats?
Correct Answer
The respiratory quotient (RQ) is defined as the ratio of the volume of CO₂ evolved to the volume of O₂ consumed during respiration. It is calculated using the formula: RQ = Volume of CO₂ evolved / Volume of O₂ consumed.
When fats are used as respiratory substrates, the RQ is less than 1. For instance, using the fatty acid tripalmitin as a substrate yields an RQ value of 0.7.
Exercise: EXERCISES | Q: 10 | (Page Page 13)
For More Understanding
Explanation
The answer is derived directly from the section '12.7 RESPIRATORY QUOTIENT'. The text explicitly defines RQ as the ratio of CO₂ evolved to O₂ consumed. Regarding fats, the text states that the RQ is less than 1 and provides the specific calculation for tripalmitin (102 CO₂ / 145 O₂) to demonstrate that the value is 0.7.