NEETBotanyRespiration in Plants
Why does the respiratory quotient (RQ) equal 1 when carbohydrates are completely oxidized?
Options
- ABecause more O2 is consumed than CO2 is evolved
- BBecause equal amounts of CO2 are evolved and O2 are consumed
- CBecause CO2 is evolved without O2 consumption
- DBecause no CO2 is evolved
Correct answer
B. Because equal amounts of CO2 are evolved and O2 are consumed
Step-by-step solution
The respiratory quotient depends upon the type of respiratory substrate used during respiration. When carbohydrates are used as substrate and are completely oxidized, the RQ will be 1, because equal amounts of CO2 and O2 are evolved and consumed, respectively,