Members of the phylum ________________, formerly known as the green nonsulphur bacteria, have primarily been associated with extreme habitats such as hot springs, and hypersaline environments where they are known as (filamentous) anoxygenic photothophs
A. Bacteroidetes
B. Chloroflexi
C. Cyanobacteria
D. Proteobacteria
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Which of the following is NOT a characteristic of the phylum Proteobacteria?
A. the phylum contains 5 classes
B. they are the largest group of bacteria
C. they are all Gram negative
D. Staphylococcus is in this phylum
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