Produce a Dichotomus/Bacterial Key including the following characteristics

utilizes a relatively large supply of serine, proline, aspartate, and glutamate;

g lactose negative, citrate positive, lysine decarboxylase positive, gelatin hydrolysis negative, and the production of hydrogen sulfide

motilefacultative anaerobes (they can makes ATP energy by aerobic respiration if oxygen is present, but is also capable of switching to fermentation)

oxygen requirements, motility, morph, catalase

. It was originally named for its first discovery in feces, but was later found to be much more common in other places as well. Optimum growth occurs at about 37°C with no pigmentation. Whileopportunistic infections do occur, the bacterium is generally considered non-pathogenic. When an opportunistic infection does occur, it is usually observed in the form of a urinary tract infection

growth factors, morph., gram rxn., oxidase rxn., read Genera descriptions

1).Shigella are closely related toEscherichia coli andSalmonellaand share common antigens with one another and other enteric bacteria. There are four species ofShigella:S. boydii, S. dysenteriae, S. flexneri,?and S. sonnei.

Some strains are harmful to humans and causefoodborne illness, while other strains can be beneficial as probiotics for animals.[1] It is the cause of “Fried Rice Syndrome,” as the bacteria is classically contracted from fried rice dishes that have been sitting at room temperature for hours (such as at a buffet).[2

growth factors, morph., gram rxn., oxidase rxn., read Genera descriptions

(Figure 1). The species name stems from:Helico, meaning helical or spiral shape,bacter, meaning bacteria, andpylori, refering to pylorus region of the stomach. This pathogen possesses five to seven distinct flagella and grows best when cultured at 37°C (Figure 2). Interestingly, in resting individuals, 37°C is the stomach’s temperature – the targeted organ; however, the bacteria is able to withstand temperatures as low as 25°C.

morph., oxygen require, catalase