Question

Arrange the following respiratory substrates used
in aerobic respiration in increasing order of their
respiratory quotients?
1. Protein - Tripalmitin-Oxalic acid - Glucose
2.Protein - Tripalmitin-Glucose -Oxalic acid
3.Tripalmitin - Protein - Oxalic acid - Glucose
4.Tripalmitin - Protein - Glucose - Oxalic aid​

Answer 1

Answer:

i think 1st series is correct

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Answer 2

Answer:

D. Tripalmitin - Protein - Glucose - Oxalic acid

Explanation:

The respiratory quotient is the amount of Carbon dioxide produced when oxygen is consumed. It is also known as RQ.

Fats and protein exhibit minimum RQ during respiration.

Their RQ is mostly less than 1.

This is due to the fact that fats and proteins require more oxygen for their breakdown.

A major portion of the oxygen in the above-mentioned cases is used up for the excess hydrogen atoms.

Carbohydrates, on the other hand, have a large RQ.

They almost have the equal consumption of oxygen and release of carbon dioxide.

The RQs of the given compounds in the question is as follows-

Tripalmitin - 0.7

Protein - 0.8 - 0.9

Glucose - 1.0

Oxalic acid - 4.0

The high RQ of Oxalic acid can be demonstrated through this equation-

$2C_{2} H_{2} O_{2} + O_{2} ------ > 4CO_{2} + 2H_{2} O\\Respiratory Quotient = CO_{2} /O_{2} = 4/1 = 4.$

Thus, the increasing order of RQ of substrates is - Tripalmitin - Protein - Glucose - Oxalic acid.

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