What type of metabolism takes place when oxygen levels in body tissues are low?
This question confuses me. Answer : Anaerobic respiration (anaerobiosis), it is the oxidation of molecules in the absence of oxygen to produce energy, in opposition to aerobic respiration which does use oxygen. Cell respiration is the process of generating ATP through a process of oxidation and where an inorganic molecule is the final electron carrier. Anaerobic respiration processes require another electron acceptor to replace oxygen. Anaerobic respiration is often used interchangeably with fermentation, especially when the glycolytic pathway is used for energy production in a obligate anarobe cell. They are not synonymous terms. Fermentation happens when an organic molecule is the final electron carrier (such as lactic acid, ethanol etc). Anaerobic prokaryotes can generate all of their ATP using an electron transport system and ATP synthase. It is almost as efficient as aerobic respiration but much more efficient than fermentation.
