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.
0. The appearance of E. coli will vary depending on what type of agar you used. But I assume you have used a standard nutrient agar type of medium. In that case E. coli colonies will look like pale yellow, round, smooth colonies.Well, at least that is how laboratory strains of E. coli will look.ut I assume you have used a standard nutrient agar type of medium. In that case E. coli colonies will look like pale yellow, round, smooth colonies. Well, at least that is how laboratory strains of E. coli will look.