A) glucose
B) sucrose
C) fat
D) organic acid
Correct Answer: D
Solution :
Respiratory Quotients (RQ) is the ratio of the volume of carbon dioxide produced to the volume of oxygen consumed in respiration over a period of time. Its value is one, zero, more than 1 or less than 0. RQ slightly more than unity is found when organic acids are broken down as respiratory substrates under aerobic conditions. For example, \[{{C}_{6}}{{H}_{6}}{{O}_{5}}+3{{O}_{2}}\xrightarrow{{}}4C{{O}_{3}}+3{{H}_{2}}O\](Malic acid)\[RQ=4C{{O}_{2}}/3{{O}_{2}}\] or 1.3
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