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Question
R.Q. is less than 1 if the respiratory substrate is _______.
Options:
A .  Organic acid
B .  Fats and proteins
C .  Sucrose
D .  Glucose
Answer: Option B
:
B
Respiratory quotient or R.Q is theratio of the volume of carbon dioxide evolved to that of oxygen consumed by an organism, tissue, or cell in a given time. R.Q isless than one for fats & proteins.
R.Q is 1 for carbohydrates like sucrose and glucose and it is more than 1 for organic acids.

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