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Question
On complete oxidation in which one of the following substrates RQ will be more than one?
On complete oxidation in which one of the following substrates RQ will be more than one?
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Solution
The correct option is B Organic acid
The respiratory quotient (RQ) is the ratio of CO2 produced to O2 consumed while food is being metabolized.
RQ = CO2 eliminated/O2 consumed.
The value of RQ is equal to 1 if carbohydrates are the respiratory substrates in aerobic respiration.
When the respiratory substrate is fat, the RQ is about 0.7.
When organic acids are broken down as respiratory substrates under aerobic conditions the RQ is more than one. Organic acids contain more oxygen than carbohydrates and therefore require less oxygen for their oxidation.
The value of R.Q for proteins is about 0.8.
Thus, option C is correct and other options are incorrect.
The respiratory quotient (RQ) is the ratio of CO2 produced to O2 consumed while food is being metabolized.
RQ = CO2 eliminated/O2 consumed.
The value of RQ is equal to 1 if carbohydrates are the respiratory substrates in aerobic respiration.
When the respiratory substrate is fat, the RQ is about 0.7.
When organic acids are broken down as respiratory substrates under aerobic conditions the RQ is more than one. Organic acids contain more oxygen than carbohydrates and therefore require less oxygen for their oxidation.
The value of R.Q for proteins is about 0.8.
Thus, option C is correct and other options are incorrect.
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