Respiratory Quotient MCQ - Practice Questions with Answers
Edited By admin | Updated on Sep 18, 2023 18:34 AM | #NEET
Quick Facts
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10 Questions around this concept.
Solve by difficulty
EASYWhich among the following has the least RQ?
RQ of proteins, carbohydrates, fats, and organic acids are in order
Concepts Covered - 1
Respiratory Quotient
- During aerobic respiration, O2 is consumed and CO2 is released.
- The ratio of the volume of CO2 evolved to the volume of O2 consumed in respiration is called the respiratory quotient (RQ) or respiratory ratio
- The respiratory quotient depends upon the type of respiratory substrate used during respiration.
- When carbohydrates are used as substrate and are completely oxidised, the RQ will be 1, because equal amounts of CO2 and O2 are evolved and consumed.
- When fats are used in respiration, the RQ is less than 1. Calculations for fatty acid, tripalmitin, if used as a substrate is shown:
- When proteins are respiratory substrates the ratio would be about 0.9.
- When organic acids are used as the respiratory substrate, the R.Q is more than one.
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