Cellular Respiration 1 : Glycolysis

Cellular Respiration 1 : Glycolysis
Cellular respiration can be divided into two stages: 1. Glycolysis Organic compounds are converted into three-carbon molecules of pyruvic acid, producing a small amount of ATP and NADH (an electron carrier molecule). Glycolysis is an anaerobic process because it does not require the presence of oxygen. 2. Aerobic Respiration

Fermentation

Fermentation
When oxygen is present, cellular respiration continues as pyruvic acid enters the pathways of aerobic respiration. In anaerobic conditions (when oxygen is absent), however, some cells can convert pyruvic acid into other compounds through additional biochemical pathways that occur in the cytosol. The combination of glycolysis and these additional