Same chapter3 marksDifficulty: Medium
What is photorespiration and why is it regarded as wasteful?
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3 marksDifficulty: Medium
What is the respiratory quotient, and what values does it take for carbohydrate, fat and protein?
Original Khojo Papers practice question — not from a past board paper.
Answer
The respiratory quotient is the ratio of the volume of carbon dioxide given out to the volume of oxygen taken in during respiration. It is 1 for carbohydrate, about 0.7 for fat and about 0.9 for protein, and it is zero for anaerobic respiration in which no oxygen is used.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
The value therefore indicates which substrate is being respired.
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