In both eukaryotes and prokaryotes, glycolysis occurs in the cytoplasm of the cell. Glycolysis is the first step of cellular respiration, which has 10 steps in all.
Glycolysis is the first stage in cellular metabolism, breaking glucose down into pyruvates. Pyruvates are then able to further metabolize through fermentation or aerobic respiration. Because glycolysis does not require oxygen, it can occur in aerobic organisms as well as anaerobic. This process involves 10 steps and also occurs in plant cells, the cells of microorganisms and animal cells. For bacteria, this process is the only source of energy. The remaining processes of cellular respiration are carried out in the mitochondria.