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Respiratory Quotient

R.Q. is ratio...

Question

R.Q. is ratio of

_{2}

produced to substrate consumed

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_{2}

produced to O

_{2}

consumed

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Oxygen consumed to water produced

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Oxygen consumed to CO

_{2}

produced.

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Solution

The correct option is B CO $_{2}$ produced to O $_{2}$ consumed
R.Q stands for respiratory quotient or respiratory ratio. It is the volume of CO $_{2}$ evolved to the volume of O $_{2}$ consumed. It depends upon the type of respiratory substrate used during respiration. When carbohydrates are used as a substrate and are oxidized completely the RQ is 1. For fats, it is less than 1 and for proteins, it is 0.9.
So, the correct option is 'CO $_{2}$ produced to O $_{2}$ consumed'.

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M

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