Bacteria Microorganism essays

Bacteria Microorganism essays Bio 162 Bacteria Microrganism Assignment Morphology: N.gonorrohoeae is a gram negative cocci organism. The colonies are usually pinkish brown but after a 48-hour incubation period they turn clear brown. They span anywhere from .6 to 1.0 micrometers in diameter. They are usually seen in pairs as dipplococci with adjacent flattened sides. The organism is found with intercellular in neutrophils of the gonorrhea pustualar extrate.(Bergeys Manual) Frimbriae play a major role in adherence extends several micrometers from the cell surface. When attached the production of an endotoxin begins. The gram-negative shell is composed of proteins, phospholipids, and lipopolysaccarides. The bacterium releases outer membrane fragments during growth. This is a very fragile organism it is susceptible to temperature changes, drying and other changes. Cultures grow best at 35-36 degrees in an atmosphere of 3-10% added carbon dioxide.(N.gonorrahae strains are typed on the basis of their growth requirements). The cultures have to grow in selecti ve medium, these aerobic, non-motile organism releases the IgA protease helps protect them from antibodies. They do not produce spores and they will not live outside of the human hosts body. Etiology: The genus Neisseria contains a number of species, which are normal flora, and pathogens of humans and animals. Of these species, the species of human origin and particularly the pathogenic species, N. gonorrhoeae and N. Meningitidis have been studied extensively in an effort to control the infections they cause. Gonorrhea, caused by N. gonorrhoeae, is one of the most frequently reported infectious diseases in the United States and worldwide. Rapid tests have been developed to identify and distinguish N. gonorrhoeae, from the commensal Neisseria and related species, which are normal flora of the oro- and nasopharynx. Because many rapid tests for the identification of N. gonorrhoeae test for a li ...