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Microbiology-Exam-II
Genus
| Question | Answer |
|---|---|
| Bacillus. | Firmicutes Rod Shaped Gram positive cells, All form endospores, example species cereus, subtilis, anthracis. |
| Clostridium. | Firmicutes Gram Positive rod shaped obligate anaerobes. Endospore forming (drumstick morphology). |
| Epulopiscium fishelsoni. | Very large bacteria that grows in GI tract of surgeonfish that undergoes live birth. |
| Listeria monocytogenes. | Firmicutes, Facultative anaerobic non spore forming bacteria that causes gastroenteritis. Thrives in colder temperatures, cannot make flagellum under 30 degrees C, uses the actin propulsion system above this temperature. |
| Lactic Acid Bacteria. | Lactococcus (cheese), Lactobacillus (yogurt), Leconostoc (saurkraut). |
| Staphylococcus. | Facultative anaerobes, gram positive, clusters of cocci, Staph aureus, Staph epidermidis(100%) |
| Streptococcus. | Firmicutes Aerotolerant gram positive chain cocci. S. Pneumoniae (pnemonia), S. pyrogens (strep throat). Oxidase and catalase negative. |
| Mollicutes. | Bacterial class that lacks cell wall. Mycoplasma is best known genus. Fried egg shaped colonies. Related to lactobacilli and clostridium so they are labelled as G+ |
| Firmicutes. | Low G-C gram positive phylum. Bacillus, Listeria, Staphylococcus, Streptococcus, Enterococcus, lactobacillus, Lactococcus, Clostridium |
| Actinomycetes. | High G-C bacteria, includes Mycobacterium, Corynebacterium, Nocardia, Rhodococcus, Athrobacter, Streptomyces. |
| Streptomyces. | Actinomycetes. soil dwelling obligate G+ aerobes. linear chromosomes. Form mycelia like a fungus that fragment into smaller cells (arthrospores), antibiotics. |
| Mycobacterium. | Actinomycetes. Rod shaped bacteria with mycolic acids in cell wall. examples: tuberculosis, leprae |
| Corynebacterium. | Actinomycetes. G+ rod. divides by half snapping. example diptheriae. |
| Athrobacter. | Actinomycetes, Gram-positive obligate aerobes that have an unusual cell cycle. Coccoid>Rod>coccoid. branched filaments, bioremediation. |
| Alphaproteobacteria | class that includes Rickettsia ricketsiiRhodobacter sphaeroides, Caulobacter crescentus, Methylobacterium, Rhizobium, Sinorhizobium Trends: Obligate aerobes. |
| Betaproteobacteria | class that includes Neisseria gonorrhoeae, Burkholderia cepacia, Thiobacillus, Nitrosomonas |
| Gammaproteobacteria | class that includes Chromatium, Beggiatoa, E. coli, pseudomonas, Legionella pneumophila |
| Deltaproteobacteria | class that includes Bdellovibrio, Myxococcus xanthus |
| Epsilonproteobacteria | class that includes Campylobacter, Helicobacter pylori Trends include spiral shape, microaerophilic. |
| Bacteroidetes | Phylum that includes Bacteroids, Por |
| Rhizobium | Alphaproteobacteria, obligate aerobes, nitrogen fixers, curved or club-shaped |
| Sinorhizobium | Alphaproteobacteria, obligate aerobes, nitrogen fixers, curved or club-shaped |
| Rhodobacter | Alphaproteobacteria, facultative anaerobe, photosynthetic, nitrogen fixing, used to express protein, rod, chromosomes |
| Caulobacter | Alphaproteobacteria, obligate aerobe, ubiquitous in water, oligotroph (harsh envir), swarm and stalk, oligotrophic (mostly vibrio) |
| Methylobacterium | Alphaproteobacteria, obligate aerobe, soil dwelling, single carbon oxidizing, rod |
| Rickettsia | Alphaproteobacteria, obligate aerobe, pathogen, RMSF, intracellular pathogen, chloroamphenicol, pleomorphic, obligate intracellular, mitochondria |
| Burkholderia | Betaproteobacteria, obligate aerobe, animal and plant pathogen, nosocomial pneumonia, hardy rod resistant to betadine, polymyxin, and aminoglycosides, ceftazidime and doxycycline are used to treat |
| Nitrosomonas | Betaproteobacteria, obligate aerobe, oxidizes ammonia to nitrite, photophobic |
| Neisseria | Betaproteobacteria, obligate aerobe, causes gonorrhea and conjunctivitis (silver nitrate in eyes of neonates) penicillin resistant ceftriaxone susceptible, coffee-bean shaped diplococci |
| Thiobacillus | Betaproteobacteria, obligate aerobes, thermophilic, acidophilic, polartrichous rod, oxidize iron |
| Chromatium | Gammaproteobacteria, Purple sulfur bacterium, aerotolerant anaerobe, oxidize sulfide to sulfur deposit as granules, single flagellated ovoid/rod |
| Beggiatoa | Gammaproteobacteria, microaerophilic, oxidize H2S and form sulfur granules, among largest prokaryote |
| Legionella | Gammaproteobacteria, obligate aerobe, invades macrophage and amoebas contaminates a/c systems, pleomorphic, flagellated, legionnaires disease (produces pneumonia and fever), treat with quinolones and macrolides |
| Pseudomonas | Gammaproteobacteria, obligate aerobe, polartrichous, flagellated, rod |
| Salmonella | Gammaproteobacteria, aerobic, pathogenic enteric, peritrichous, rod, causes diarrhea |
| Escherichia | Gammaproteobacteria, facultative anaerobe, proteus species are heavily flagellated, E Coli O157:H7 causes disease |
| Myxococcus | Deltaproteobacteria, obligate aerobe, predatory/saprotrophic non flagellated rod, starving bacteria form fruiting body |
| Bdellovibrio | Deltaproteobacteria, obligate aerobe, parasitizes the periplasm of other proteobacteria, Tiny flagellum |
| Helicobacter | Epsilonproteobacteria, microaerophilic, helical, ulcers/gastroenteritis, flagellated urease to raise pH of stomach acid |
| Campylobacter | Epsilonproteobacteria, spiral, pathogenic-diarrhea, microaerophilic, flagellated |
Created by:
alex01tib
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