EducationMetabolic Unknown Dichotomous Key
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Proteus mirabilis
YES
Ornithine-decarboxyl?
YES
Citrate-permease?
Enterobacter aerogenes
Tetrad Arrangement?


NO


NO

YES

NO


NO

YES
Staphlyococcus aureus
Staphylococcus epidermidis
Urease?
O-F Test: N
Micrococcus luteus





YES


NO

YES

 
Citrobacter freundii
NO
Gelatinase?
O-F Test: O
Alcaligenes faecalis





NO


NO

YES

 
Bacillus Cereus
YES
1.5x10um or bigger?
PR Lactose: K
Pseudomonas fluorescens





NO


NO

YES

 
Bacillus subtilis
YES
Aerobic?
Indole production?
Proteus vulgaris





NO


NO

YES

 
Corynebacterium xerosis
YES
Oxidase?
Catalase?
Escherichia coli






YES

YES

NO

 
 
Bacillus Megaterium
NO
Nitrate Reduction?
Entercoccus faecalis