In this article we will discuss about:- 1. Meaning of Pentose Phosphate Pathway (PPP) 2. Reactions of Pentose Phosphate Pathway (PPP) 3. Significance. Meaning of Pentose Phosphate Pathway (PPP): Major pathway for aerobic respiration of glucose is through glycolysis and Krebs cycle, however, an alternate pathway exists in many organisms. This pathway, which requires the presence of oxygen, is called [...]
The net ATP-yield in eukaryotes from glycolysis, TCA cycle, and electron transport and oxidative phosphorylation can be readily calculated. Before the general acceptance of the chemiosmotic hypothesis for oxidative phosphorylation, this calculation was based on phosphate/oxygen ratio (P/O ratio). Most experiments yielded P/O (ATP to ½ O2) ratio of more than two when NADH was the electron donor, and more [...]
The below mentioned article provides a quick note on the Anaerobic Respiration. When oxygen is used for respiration, it is called aerobic respiration. Aerobic respiration involves two phases: (i) External respiration: It is simply the intake of oxygen from the surrounding medium and giving out of carbon dioxide into the surrounding medium, (ii) Internal respiration: This involves three steps: (a) [...]