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BETA-PROTEOBACTERIA ( β  -PROTEOBACTERIA) —often use nutrient substances that  diffuse away from decomposing organic matter but several pathogens are in this group a.  Thiobacillus —use sulfur in energy production b.  Spirillum —spiral shape, live in water and are motile by polar flagella. They are relatively large  and aerobic.  c.  Sphaerotilus —sheathed bacteria found in fresh water and sewage. They form a hollow sheath  and live inside. This can clog sewage plants.  d.  Burkholderia —this is a recently classified genus, split off from  Pseudomonas . Organisms are  motile by flagella and aerobic.  B. cepacia  can break down a great variety of organic compounds 
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This note was uploaded on 01/23/2012 for the course MCB MCB2010 taught by Professor Smith during the Fall '09 term at Broward College.

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