Mycobacteria are oxygen consuming. They are bacillary in structure, at any rate in many stages that have pulled in human microbiological thoughtfulness regarding date; they are straight or somewhat bended bars somewhere in the range of 0.2 and 0.6 µm wide and somewhere in the range of 1.0 and 10 µm long. They are commonly nonmotile microorganisms, aside from the species Mycobacterium marinum, which has been demonstrated to be motile inside macrophages. They are distinctively corrosive fast. Mycobacteria have an external membrane. They have containers, and most don't shape endospores. M. marinum and maybe M. bovis have been appeared to sporulate;nonetheless, this has been challenged by further research. The distinctive attribute of all Mycobacterium species is that the cell divider is thicker than in numerous other microscopic organisms, being hydrophobic, waxy, and rich in mycolic acids/mycolates. The cell divider comprises of the hydrophobic mycolate layer and a peptidoglycan layer held together by a polysaccharide, arabinogalactan. The cell divider makes a significant commitment to the strength of this sort. The biosynthetic pathways of cell divider parts are potential focuses for new medications for tuberculosis. Numerous Mycobacterium species adjust promptly to development on extremely basic substrates, utilizing alkali or amino acids as nitrogen sources and glycerol as a carbon source within the sight of mineral salts. Ideal development temperatures fluctuate broadly as indicated by the species and range from 25 °C to more than 50 °C. Most Mycobacterium species, including most clinically applicable species, can be refined in blood agar. However, a few animal groups become gradually because of incredibly long conceptive cycles—M. leprae, may take over 20 days to continue through one division cycle (for examination, some E. coli strains take just 20 minutes), making lab culture a moderate process. what's more, the accessibility of hereditary control procedures despite everything falls a long ways behind that of other bacterial species.