Thread: Longest lived empires/states in history. 1 out of 1 members found this post helpful. Many lists have been written about the most long-lived empires or states in the history of mankind and oddly enough nobody seems to agree on the ranking.
E. coli is a Gram-negative (bacteria which do not retain crystal violet dye), facultative anaerobic (that makes ATP by aerobic respiration if oxygen is present, but is capable of switching to fermentation or anaerobic respiration if oxygen is absent) and nonsporulating bacterium.
Cells are typically rod-shaped, and are about 2.0 Î¼m long and 0.25â1.0 Î¼m in diameter, with a cell volume of 0.6â0.7 Î¼m3. E. coli stains Gram-negative because its cell wall is composed of a thin peptidoglycan layer and an outer membrane.