Microbial Diversity (final exam)
Terms
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- anoxygenic phototrophs that grow phototrophically, obtaining carbon from CO2 + H2S
- purple sulfur bacteria
- anoxygenic phototrophs that grow phototrophically, obtaining carbon from organic sources
- purple nonsulfur bacteria
- reside in alpha, beta, and gamma subdivisions of the proteobacteria
- purple bacteria
-
key genera includes:
chromatium
ectothiorhodospira
rhodobacter
rhodospirillum - purple bacteria
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key genera:
nitrosomonas
nitrobacter - nitrifying bacteria
- widespread in soil and water; present in highest numbers in habitats where considerable amounts of ammonia are present
- nitrifying bacteria
- bacteria able to grow chemolithotrophically at the expense of reduced inorganic nitrogen compounds
- nitrifying bacteria
-
key genera include:
thiobacillus
achromatium
beggiatoa - sulfur and iron oxidizing bacteria
- produces hemolysins (enzyme that lyses red blood cells)
- streptococci
- Beta hemolytic (S. pyogenes) is the cause of:
- strep throat
- alpha hemolytic (S. pneumonia) is the cause of:
- bacterial pneumonia
- endospore-forming gram + rods and cocci
- bacillus - aerobic or facultative anaerobes
- strict anaerobes including C. tetani and C. boutlinum
- clostridium
- responsible for gas gengrene
- clostridium perfringens
- anoxygenic phototrophic bacteria
- purple or green bacteria