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o-na [289]
3 years ago
5

The dichotomous key illustrated here allows the classification of microorganisms based on their metabolic characteristics. Suppo

se some organisms ferment lactose but can't use citric acid for all their carbon needs. These organisms must be
Biology
2 answers:
Degger [83]3 years ago
5 0
The answer is C) Escherichia. When you follow the path down it shows it. Plus,I just answered the question and I got it right
grandymaker [24]3 years ago
3 0

The organism must be <em>Escherichia coli</em>

Escherichia coli is a bacterium of the family Enterobacteriaceae.

Escherichia coli is abundant in the commensal flora, particularly in the digestive tract.

Aerobic bacillus, Gram negative, oxidase negative, nitrate positive and which ferments glucose.

* fermentation of sugars: glucose +, lactose +

* reduction of nitrates to nitrites: NO3 +

* metabolism of tryptophan to indole: ind +

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