The respiratory quotient (RQ) or respiratory ratio is

R Q = \frac{V o l u m e o f O_{2} e v o l v e d}{V o l u m e o f C O_{2} c o n s u m e d}

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R Q = \frac{V o l u m e o f O_{2} c o n s u m e d}{V o l u m e o f C O_{2} e v o l v e d}

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R Q = \frac{V o l u m e o f C O_{2} c o n s u m e d}{V o l u m e o f O_{2} e v o l v e d}

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R Q = \frac{V o l u m e o f C O_{2} e v o l v e d}{V o l u m e o f O_{2} c o n s u m e d}

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Solution

The correct option is D $R Q = \frac{V o l u m e o f C O_{2} e v o l v e d}{V o l u m e o f O_{2} c o n s u m e d}$
Respiratory quotient (RQ) is the ratio of the volume of carbon dioxide produced to the volume of oxygen consumed while food is being metabolised. Its value can be one, zero, more than 1 or less than one depends on the nutrients in the food we eat. For example, if food consists solely of carbohydrates the RQ becomes 1.0.

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