Question

RQ of protein is

• A. 0.7
• B. 1
• C. 0.9
• D. more than one

Answer 1

The correct option is C 0.9

The respiratory quotient (RQ) is used in calculations of basal metabolic rate (BMR). It is the ratio of the volume of carbon dioxide produced by the body to the volume of oxygen consumed by the body in respiration over a period of time. It depends on the type of respiratory substrate used during respiration. When the respiratory substrate is fat, the RQ is about 0.7. When the respiratory substrate is a carbohydrate, the RQ is 1. When the respiratory substrate is an organic acid, the RQ is above 1. When the respiratory substrate is protein, the RQ is 0.9.

Thus, the correct answer is option C.