Consumption of molecular oxygen-metabolic rate of aerobic

Question

Why can a consumption of molecular oxygen point to the metabolic rate of the aerobic organisms?

Answer 1

Molecular oxygen (or O₂ ) consumption has direct relation to cell metabolic rate in aerobic cells and consequently to the metabolic rate of organisms. A cell comprising higher metabolic activity demand more energy and these energy arrives from ATP molecules. As there is require for ATP creation and production, the intensity of the aerobic cell respiration is as well higher and then more oxygen is consumed transformed in acetyl CoA with release of one carbon dioxide molecule (or two in totals). Because each of the two produced and generated acetyl CoA cycles the Krebs cycle once, from the preliminary glucose two rounds of Krebs cycle is produced and so four other carbon dioxide molecules are finished.

All of six carbons of glucose molecule are then integrated in six carbon dioxide molecules (two made throughout acetyl CoA formation and four throughout the two cycles of Krebs cycle).