Respiratory quotient, Biology

Respiratory Quotient

Table also shows the ratio of the volume of carbon dioxide evolved to that of the amount of oxygen consumed during oxidation. This is the respiratory' quotient or RQ. It is an important concept in energy metabolism. From the table you can see that RQ is usually between 0.7 and 1.0. However, RQ near 0.7 shows that fat is being metabolised and RQ near 1.0 suggests carbohydrate metabolism. RQ in between 0.7 and 1.0 could indicate either protein or a mixed diet metabolism.

1196_Heat production and respiratory quotient for foodstuff types.png

Quite often animals cannot utilise the entire food value because not all the food they consume is fully digested. Also some portion is excreted as urea or ammonia. In general, it has been observed that animals have a higher intake of food than what is indicated by their oxygen consumption data so that their body weight is kept steady'. The oxygen consumption per unit weight/per unit time mm 3O2/g/hr tends to decrease with higher body weight of animals. In other words, small sized animals like mouse, shrew, etc., have a higher metabolic rate than a large sized animal (an elephant) as evidenced by their oxygen consumption. Accordingly smaller animals have a need to feed constantly. This would also mean that an elephant can survive without food for a much longer period of time than a mouse.

Posted Date: 1/15/2013 6:11:14 AM | Location : United States

Related Discussions:- Respiratory quotient, Assignment Help, Ask Question on Respiratory quotient, Get Answer, Expert's Help, Respiratory quotient Discussions

Write discussion on Respiratory quotient
Your posts are moderated
Related Questions
Crustacea - Feeding and Digestion in Arthropods Branchiopods (Anacostraca) give a good instance for filter feeding mechanism. The appendages are of foliaceous type (leaf-like)

Explain about the Fructnns as Food Ingredients? Oligosaccharides have several functional/technological attributes that give them a potential for incorporation into foods. They

Pre-Diabetes is a condition where blood sugar level is above normal but below the value to be diagnosed as diabetes mellitus. It has been found that those people with blood sugar v

Name the different level of proteins There are 4 level of proteins:- a) Primary structure b) Secondary structure c) Tertiary structure d) Quaternary structure

What are hormones? Hormones are chemicals secreted by the body to create changes in physical appearance, reproductive behavior, and emotions. Hormones are organic chemical m

What are the advancement of cnidaria over protozoa

Explain the Storage of vitamin A? The primary organ for storage of vitamin A is the liver. Reserves are found in the stellate cells, as mentioned above. The average liver weigh

What is Glycolysis in Cell Metabolism? Glycolysis :  is the process that breaks down glucose into pyruvate and energy. Glycolysis does not require the presence of oxygen and

Define Methods for Determining the Amount of Microbes in Food? Following methods can be employed for determining the amount of microbes in the food samples and analyzing their