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Question

RQ in anaerobic respiration is?

A
0.7
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B
0.9
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C
Unity
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D
Infinity
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Solution

The correct option is D Infinity
During aerobic respiration, oxygen is consumed and carbon dioxide is released. The ratio of the volume of carbon dioxide given out to the volume of oxygen absorbed in respiration, i.e., CO2/O2 is called respiratory quotient (RQ) or respiratory ratio. in anaerobic respiration, CO2 is evolved but O2 is not consumed, and therefore RQ is infinite (∞).
Equation is as follows:
C6H12O6 2C2H5OH + 2CO2 + energy
RQ CO2/O2 = 2/0 = infinity

So the correct option is 'infinity'.

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