anaerobic respiration plants definition
Anaerobic respiration is the metabolic process in which oxygen is absent, and only the stage of glycolysis is completed. This process occurs mostly in microorganisms, but it can also be a temporary response to anoxic, or oxygen-less, conditions in the cells of multi-cellular organisms - even us! (redirected from Anerobic respiration) Also found in: Dictionary, Wikipedia. Related to Anerobic respiration: anaerobic exercise. a form of respiration in which molecular oxygen is not consumed, for example, nitrate respiration, sulfate respiration. The same reactions occur as in AEROBIC RESPIRATION, but in anaerobes the absence of oxygen prevents the two resulting molecules of reduced NAD from being oxidized via the ELECTRON TRANSPORT SYSTEM (ETS) in the MITOCHONDRIA. Instead, ATP is produced from ADP by SUBSTRATE-LEVEL PHOSPHORYLATION. a type of cell respiration that takes place in ANAEROBES, and in which energy is released from glucose and other foods without the presence of oxygen. The reactions fall into two stages: Stage 1: GLYCOLYSIS, in which glucose is converted to two molecules of pyruvic acid (pyruvate) in the general cell cytoplasm. Examples of Anaerobic Respiration. Alcohol fermentation, or ethanol fermentation, occurs when single-celled organisms break down pyruvate into ethanol, releasing carbon dioxide in the process. This process is utilized in the making of bread, wine, beer and ethanol fuels. oxidative transformation of certain substrates into secretory products, the released energy being used in the process of assimilation. anaerobic respiration. respiration in which energy is released by chemical reactions in which free oxygen takes no part. a type of cell respiration that takes place in ANAEROBES, and in which energy is released from glucose and other foods without the presence of oxygen. The reactions fall into two stages: Stage 1: GLYCOLYSIS, in which glucose is converted to two molecules of pyruvic acid (pyruvate) in the general cell cytoplasm. The yield of ATP in anaerobic respiration is poor because, firstly, the ETS cannot be used without oxygen, and, secondly, the end products still contain large amounts of energy. As a result, the free energy released and stored is only a fraction of the amount in the complete oxidation of glucose, as is shown in Fig. a type of cell respiration that takes place in ANAEROBES, and in which energy is released from glucose and other foods without the presence of oxygen. Stage 1: GLYCOLYSIS, in which glucose is converted to two molecules of pyruvic acid (pyruvate) in the general cell cytoplasm. During aerobic respiration, when oxygen is present, those pyruvate molecules go through two other stages that serve to release more electrons, later used to power the generation of a very high amount of ATP. But when oxygen is absent, as in the case with anaerobic respiration, those last two stages are bypassed.
Anaerobic respiration is the metabolic process in which oxygen is absent, and only the stage of glycolysis is completed.