When tripalmitin is used as a respiratory substrate, the value of RQ is

Question

When tripalmitin is used as a respiratory substrate, the value of RQ is (A) 0.5 (B) 1.0 (C) 1.7 (D) 0.7

Tardigrade Admin · Accepted Answer

Respiratory quotient (RQ) is the ratio of the volume of carbon dioxide produced to the volume of oxygen consumed in respiration over a period of time.
RQ =

\frac{Volume of C O _{2} evolved}{Volume of O _{2} absorbed}

RQ is less than one when respiration is aerobic but the respiratory substrate is either fat or protein. RQ is about 0.7 for most of the common fats. It occurs during germination of fatty seeds.

tripalmitin 2 (C_{51} H_{98} O_{6}) + 145 O_{2} \to 102 C O_{2} + 98 H_{2} O

RQ = 102 C O_{2} /145 O_{2} = 0.7

Thus, when tripalmitin is used as a respiratory substrate, the value of RQ is 0.7.

Q. When tripalmitin is used as a respiratory substrate, the value of RQ is

0.5

1.0

1.7

0.7