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Questions  

Identify the correct statement

a
When carbohydrates are used as substrate and are completely oxidised, the RQ will be less than 1.
b
The respiratory quotient depends upon the type of respiratory substrate used during respiration.
c
When fats are used as respiratory substrate, the RQ is always greater than 1.
d
If proteins are respiratory substrates in aerobic respiration, the RQ is more than one.

detailed solution

Correct option is B

The respiratory quotient depends upon the type of respiratory substrate used during respiration.E.g., When carbohydrates are used as substrate and are completely oxidised, the RQ will be 1 because equal amounts of CO2 and O2 are evolved and consumed.When fats are used as respiratory substrate, the RQ is less than 1The RQ for proteins in aerobic respiration is between 0.8 to 0.9.

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