Exp:C The organic acid (oxalic acid) consume less oxygen due to its adequate presence and gives R.Q. more than one. $\begin{aligned} & 2(\mathrm{COOH})_{6}+\mathrm{O}_{2} \rightarrow 4 \mathrm{CO}_{2}+2 \mathrm{H}_{2} \mathrm{O} \\ & \mathrm{RQ}=\frac{4 \mathrm{CO}_{2}}{1 \mathrm{O}_{2}}=4 \end{aligned}$ So, the R.Q. of oxalic acid is 4
BVP-2013
Respiration in Plants
283803
RQ value of 4 may be expected for the complete oxidation of which one of the following?
1 Glucose
2 Malic acid
3 Oxalic acid
4 Tartaric acid
Explanation:
Exp:C The oxalic acid consume less oxygen and release more carbon dioxide, so that R.Q is more than one. $\begin{gathered} 2 \mathrm{C}_{2} \mathrm{H}_{2} \mathrm{O}_{4}+\mathrm{O}_{2} \rightarrow 4 \mathrm{CO}_{2}+2 \mathrm{H}_{2} \mathrm{O} \\ \text { R.Q }=\frac{\mathrm{CO}_{2}}{\mathrm{O}_{2}}=\frac{4}{1}=4 \end{gathered}$ - When carbohydrates are the respiratory substrate:The value of R.Q. $=1.0$ -When organic acid are respiratory substrate: Then value of R.Q. is $<1$ (more than 1.) - When lipid or fats and proteins are respiratory substrate, R.Q. Value will be less than one. It is because lipids are poor in $\mathrm{O}_{2}$ for their oxidation.
Kerala PMT-2009 Punjab MET-2007
Respiration in Plants
283797
R.Q. of sprouting potato tubers will be:
1 1
2 $<1$
3 $>1$
4 0
Explanation:
Exp:A R.Q. of sprouting potato tubers will be 1
Karnataka CET-2002
Respiration in Plants
283804
Which one has the lowest respiratory quotient?
1 Glucose
2 Tripalmitin
3 Oxalic acid
4 Malic acid
Explanation:
Exp:B Respiratory quotient is the ratio of the volume of $\mathrm{CO}_{2}$ released and $\mathrm{O}_{2}$ consumed in respiration. - The respiratory quotient (RQ) depends upon the type of respiratory substrate used during respiration. It is less than 1 for fat. If tripalmitin is the respiratory substrate the ratio would be about 0.72 $\underset{\text { (Tripalmitin) }}{\left(\mathrm{C}_{51} \mathrm{H}_{98} \mathrm{O}_{6}\right)}+145 \mathrm{O}_{2} \rightarrow 10 \mathrm{CO}_{2}+98 \mathrm{H}_{2} \mathrm{O} \text { Energy }$ - R.Q. value is greater than unity (1) as in organic acid $\mathrm{O}_{2}$ consumption is less than $\mathrm{CO}_{2}$ release more.
Exp:C The organic acid (oxalic acid) consume less oxygen due to its adequate presence and gives R.Q. more than one. $\begin{aligned} & 2(\mathrm{COOH})_{6}+\mathrm{O}_{2} \rightarrow 4 \mathrm{CO}_{2}+2 \mathrm{H}_{2} \mathrm{O} \\ & \mathrm{RQ}=\frac{4 \mathrm{CO}_{2}}{1 \mathrm{O}_{2}}=4 \end{aligned}$ So, the R.Q. of oxalic acid is 4
BVP-2013
Respiration in Plants
283803
RQ value of 4 may be expected for the complete oxidation of which one of the following?
1 Glucose
2 Malic acid
3 Oxalic acid
4 Tartaric acid
Explanation:
Exp:C The oxalic acid consume less oxygen and release more carbon dioxide, so that R.Q is more than one. $\begin{gathered} 2 \mathrm{C}_{2} \mathrm{H}_{2} \mathrm{O}_{4}+\mathrm{O}_{2} \rightarrow 4 \mathrm{CO}_{2}+2 \mathrm{H}_{2} \mathrm{O} \\ \text { R.Q }=\frac{\mathrm{CO}_{2}}{\mathrm{O}_{2}}=\frac{4}{1}=4 \end{gathered}$ - When carbohydrates are the respiratory substrate:The value of R.Q. $=1.0$ -When organic acid are respiratory substrate: Then value of R.Q. is $<1$ (more than 1.) - When lipid or fats and proteins are respiratory substrate, R.Q. Value will be less than one. It is because lipids are poor in $\mathrm{O}_{2}$ for their oxidation.
Kerala PMT-2009 Punjab MET-2007
Respiration in Plants
283797
R.Q. of sprouting potato tubers will be:
1 1
2 $<1$
3 $>1$
4 0
Explanation:
Exp:A R.Q. of sprouting potato tubers will be 1
Karnataka CET-2002
Respiration in Plants
283804
Which one has the lowest respiratory quotient?
1 Glucose
2 Tripalmitin
3 Oxalic acid
4 Malic acid
Explanation:
Exp:B Respiratory quotient is the ratio of the volume of $\mathrm{CO}_{2}$ released and $\mathrm{O}_{2}$ consumed in respiration. - The respiratory quotient (RQ) depends upon the type of respiratory substrate used during respiration. It is less than 1 for fat. If tripalmitin is the respiratory substrate the ratio would be about 0.72 $\underset{\text { (Tripalmitin) }}{\left(\mathrm{C}_{51} \mathrm{H}_{98} \mathrm{O}_{6}\right)}+145 \mathrm{O}_{2} \rightarrow 10 \mathrm{CO}_{2}+98 \mathrm{H}_{2} \mathrm{O} \text { Energy }$ - R.Q. value is greater than unity (1) as in organic acid $\mathrm{O}_{2}$ consumption is less than $\mathrm{CO}_{2}$ release more.
Exp:C The organic acid (oxalic acid) consume less oxygen due to its adequate presence and gives R.Q. more than one. $\begin{aligned} & 2(\mathrm{COOH})_{6}+\mathrm{O}_{2} \rightarrow 4 \mathrm{CO}_{2}+2 \mathrm{H}_{2} \mathrm{O} \\ & \mathrm{RQ}=\frac{4 \mathrm{CO}_{2}}{1 \mathrm{O}_{2}}=4 \end{aligned}$ So, the R.Q. of oxalic acid is 4
BVP-2013
Respiration in Plants
283803
RQ value of 4 may be expected for the complete oxidation of which one of the following?
1 Glucose
2 Malic acid
3 Oxalic acid
4 Tartaric acid
Explanation:
Exp:C The oxalic acid consume less oxygen and release more carbon dioxide, so that R.Q is more than one. $\begin{gathered} 2 \mathrm{C}_{2} \mathrm{H}_{2} \mathrm{O}_{4}+\mathrm{O}_{2} \rightarrow 4 \mathrm{CO}_{2}+2 \mathrm{H}_{2} \mathrm{O} \\ \text { R.Q }=\frac{\mathrm{CO}_{2}}{\mathrm{O}_{2}}=\frac{4}{1}=4 \end{gathered}$ - When carbohydrates are the respiratory substrate:The value of R.Q. $=1.0$ -When organic acid are respiratory substrate: Then value of R.Q. is $<1$ (more than 1.) - When lipid or fats and proteins are respiratory substrate, R.Q. Value will be less than one. It is because lipids are poor in $\mathrm{O}_{2}$ for their oxidation.
Kerala PMT-2009 Punjab MET-2007
Respiration in Plants
283797
R.Q. of sprouting potato tubers will be:
1 1
2 $<1$
3 $>1$
4 0
Explanation:
Exp:A R.Q. of sprouting potato tubers will be 1
Karnataka CET-2002
Respiration in Plants
283804
Which one has the lowest respiratory quotient?
1 Glucose
2 Tripalmitin
3 Oxalic acid
4 Malic acid
Explanation:
Exp:B Respiratory quotient is the ratio of the volume of $\mathrm{CO}_{2}$ released and $\mathrm{O}_{2}$ consumed in respiration. - The respiratory quotient (RQ) depends upon the type of respiratory substrate used during respiration. It is less than 1 for fat. If tripalmitin is the respiratory substrate the ratio would be about 0.72 $\underset{\text { (Tripalmitin) }}{\left(\mathrm{C}_{51} \mathrm{H}_{98} \mathrm{O}_{6}\right)}+145 \mathrm{O}_{2} \rightarrow 10 \mathrm{CO}_{2}+98 \mathrm{H}_{2} \mathrm{O} \text { Energy }$ - R.Q. value is greater than unity (1) as in organic acid $\mathrm{O}_{2}$ consumption is less than $\mathrm{CO}_{2}$ release more.
Exp:C The organic acid (oxalic acid) consume less oxygen due to its adequate presence and gives R.Q. more than one. $\begin{aligned} & 2(\mathrm{COOH})_{6}+\mathrm{O}_{2} \rightarrow 4 \mathrm{CO}_{2}+2 \mathrm{H}_{2} \mathrm{O} \\ & \mathrm{RQ}=\frac{4 \mathrm{CO}_{2}}{1 \mathrm{O}_{2}}=4 \end{aligned}$ So, the R.Q. of oxalic acid is 4
BVP-2013
Respiration in Plants
283803
RQ value of 4 may be expected for the complete oxidation of which one of the following?
1 Glucose
2 Malic acid
3 Oxalic acid
4 Tartaric acid
Explanation:
Exp:C The oxalic acid consume less oxygen and release more carbon dioxide, so that R.Q is more than one. $\begin{gathered} 2 \mathrm{C}_{2} \mathrm{H}_{2} \mathrm{O}_{4}+\mathrm{O}_{2} \rightarrow 4 \mathrm{CO}_{2}+2 \mathrm{H}_{2} \mathrm{O} \\ \text { R.Q }=\frac{\mathrm{CO}_{2}}{\mathrm{O}_{2}}=\frac{4}{1}=4 \end{gathered}$ - When carbohydrates are the respiratory substrate:The value of R.Q. $=1.0$ -When organic acid are respiratory substrate: Then value of R.Q. is $<1$ (more than 1.) - When lipid or fats and proteins are respiratory substrate, R.Q. Value will be less than one. It is because lipids are poor in $\mathrm{O}_{2}$ for their oxidation.
Kerala PMT-2009 Punjab MET-2007
Respiration in Plants
283797
R.Q. of sprouting potato tubers will be:
1 1
2 $<1$
3 $>1$
4 0
Explanation:
Exp:A R.Q. of sprouting potato tubers will be 1
Karnataka CET-2002
Respiration in Plants
283804
Which one has the lowest respiratory quotient?
1 Glucose
2 Tripalmitin
3 Oxalic acid
4 Malic acid
Explanation:
Exp:B Respiratory quotient is the ratio of the volume of $\mathrm{CO}_{2}$ released and $\mathrm{O}_{2}$ consumed in respiration. - The respiratory quotient (RQ) depends upon the type of respiratory substrate used during respiration. It is less than 1 for fat. If tripalmitin is the respiratory substrate the ratio would be about 0.72 $\underset{\text { (Tripalmitin) }}{\left(\mathrm{C}_{51} \mathrm{H}_{98} \mathrm{O}_{6}\right)}+145 \mathrm{O}_{2} \rightarrow 10 \mathrm{CO}_{2}+98 \mathrm{H}_{2} \mathrm{O} \text { Energy }$ - R.Q. value is greater than unity (1) as in organic acid $\mathrm{O}_{2}$ consumption is less than $\mathrm{CO}_{2}$ release more.
