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Which is NOT a member of the phylim Proteobactera

A) epsilonproteobacteria
B) theta proteobactera
C) deltaproteobacteria
D) bataproteobacteria
E) alphaproteobacteria

User Ambie
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1 Answer

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Final answer:

Theta proteobacteria is not a class within the phylum Proteobacteria. The recognized classes are Alphaproteobacteria, Betaproteobacteria, Gammaproteobacteria, Deltaproteobacteria, and Epsilonproteobacteria.

Step-by-step explanation:

The correct answer to the question 'which is NOT a member of the phylum Proteobacteria?' is option B) theta proteobacteria. The phylum Proteobacteria is subdivided into five classes: Alphaproteobacteria, Betaproteobacteria, Gammaproteobacteria, Deltaproteobacteria, and Epsilonproteobacteria. These classes are well defined, and 'theta proteobacteria' is not recognized as one of them. In contrast, Epsilonproteobacteria is a valid class within the phylum Proteobacteria, which includes important human pathogens like Campylobacter and Helicobacter.

User Adam Huffman
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