Question

how to creat Dichotomous key about staphylococcus and Escherichia e.coli

how to creat Dichotomous key about staphylococcus and Escherichia e.coli

Homework Answers

Answer #1

Dichotomous key is a tool which is to determine the identification of organisms using biochemical tests or morphological characteristics.

{ meaning of dichotomous is divide into two parts such as gram negative and gram positive}

Dichotomous key for Staphylococcus

stain is cocci, It is gram positive, sorbitol test negative, urease positive,glucose positive, B- methyl glucoside positive, glycerol positive, mannitol salt positive, sucrose maltose mannitol positive, Rhamnose negative and  aesculin test negative.

Dichotomous key for E. coli

It is motile non capsulated gram negative bacteria. It gives gal positive, H2 gas production positive, Indol positive, lactose test positive, adonitol positive, methyl red positive, urease negative, citrate negative, VP tets negative and KCN- negative.

Hope it will helpful to you. Thank you

All the best

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