A) carbohydrates are used as respiratory substrate
B) volume of carbon dioxide evolved is less than volume of oxygen consumed
C) volume of carbon dioxide evolved is more than volume of oxygen consumed
D) volume of carbon dioxide evolved is equal, to volume of oxygen consumed
Correct Answer: B
Solution :
When respiratory quotient (RQ) is less then one in a respiratory metabolism, it means that respiratory substrate is either fat or protein. Both of the respiratory substrate always possess respiratory quotient less than one (0.5-0.9). If RQ.is one, then carbohydrates are used as respiratory substrate. When the volume of\[C{{O}_{2}}\]evolved is more than the volume of oxygen consumed, then the respiratory substrates are organic acids, whose respiratory quotient is always more than one (1.3-4.0).
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