Explain Respiratory Quotient and also equation.
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Respiratory quotient, also known as the respiratory ratio (RQ), is defined as the volume of carbon dioxide released over the volume of oxygen absorbed during respiration. It is a dimensionless number used in a calculation for basal metabolic rate when estimated from carbon dioxide production to oxygen absorption.
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It is a measure of metabolic rate It is calculated from the ratio of carbon dioxide produced by the body to oxygen consumed by the body. Typical numbers are 200 mls CO2/250 mls O2 (both per minute) giving a normal value of .8. From Wikipedia “The range of respiratory coefficients for organisms in metabolic balance usually ranges from 1.0 (representing the value expected for pure carbohydrate oxidation) to ~0.7 (the value expected for pure fat oxidation). In general, molecules that are more oxidized (e.g., glucose) require less oxygen to be fully metabolized and, therefore, have higher respiratory quotients. Conversely, molecules that are less oxidized (e.g., fatty acids) require more oxygen for their complete metabolism and have lower respiratory quotients.
In animal cells, respiratory quotient is a ratio of the volume of carbon dioxide produced by the metabolism of a given substance to the volume of oxygen consumed to metabolize the substance. A ratio is another name for a division problem.
Six molecules of carbon dioxide are formed and six molecules of oxygen are used in the aerobic metabolism of one molecule of glucose, the simplest carbohydrate. The ratio of carbon dioxide to oxygen is 6:6 or 6/6 (or 1:1 or 1/1), which equals 1.
[The balanced chemical equation for aerobic metabolism of C6H12O6 (glucose) is:
C6H12O6 + 6O2 → 6CO2 + 6H2O
Six glucose molecules plus six oxygen molecules becomes six carbon dioxide molecules plus six water molecules]
The RQ for aerobic metabolism of saturated fat is 0.667; 1 molecule of carbon dioxide is produced for about every 1.5 molecules of oxygen used: 1/1.5= 0.667
In animal cells, respiratory quotient is a ratio of the volume of carbon dioxide produced by the metabolism of a given substance to the volume of oxygen consumed to metabolize the substance. A ratio is another name for a division problem.
Six molecules of carbon dioxide are formed and six molecules of oxygen are used in the aerobic metabolism of one molecule of glucose, the simplest carbohydrate. The ratio of carbon dioxide to oxygen is 6:6 or 6/6 (or 1:1 or 1/1), which equals 1.
[The balanced chemical equation for aerobic metabolism of C6H12O6 (glucose) is:
C6H12O6 + 6O2 → 6CO2 + 6H2O
Six glucose molecules plus six oxygen molecules becomes six carbon dioxide molecules plus six water molecules]
The RQ for aerobic metabolism of saturated fat is 0.667; 1 molecule of carbon dioxide is produced for about every 1.5 molecules of oxygen used: 1/1.5= 0.667
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