A) carbohydrates are used as respiratory, substrate
B) organic acids are used as respiratory substrate
C) the oxidation of the respiratory substrate consumed more oxygen than the amount of\[C{{O}_{2}}\] released
D) the oxidation of the respiratory substrate consumed more oxygen than the amount of \[C{{O}_{2}}\]released
E) the reaction is anaerobic
Correct Answer: C
Solution :
RQ or Respiratory Quotient\[=\frac{\text{Volume of}\,\text{C}{{\text{O}}_{\text{2}}}\,\text{evolved}}{\text{Volume}\,\text{of}\,{{\text{O}}_{\text{2}}}\,\text{consumed}}\]RQ varies from less then 1 to more than 1 depending upon the respiratory substrate, eg, RQ value is (i) Unity - Aerobic respiration, respiratory substrate is carbohydrate \[{{C}_{6}}{{H}_{12}}{{O}_{6}}+6{{O}_{2}}\xrightarrow{{}}6C{{O}_{2}}+6{{H}_{2}}O\]\[RQ=\frac{6C{{O}_{2}}}{6{{O}_{2}}}=1\] (ii) Infinity - Anaerobic respiration \[{{C}_{6}}{{H}_{12}}{{O}_{6}}\xrightarrow{Zymase}2{{C}_{2}}{{H}_{5}}OH+2C{{O}_{2}}\]\[RQ=\frac{2C{{O}_{2}}}{0}=\]Infinity (iii) Zero = Succulents Vol. of \[C{{O}_{2}}=0\] (iv) More than one-Organic acids, maturing fatty seeds Vol. \[C{{O}_{2}}\] > Vol. \[{{O}_{2}}\] (v) Less than one - Fats, proteins, germination of fatty seeds Vol. of \[C{{O}_{2}}\]< Vol. of \[{{O}_{2}}\]
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