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Microbiology

Exam 03 - Bacteria - Bergey's Volume 3

QuestionAnswer
What is listed in Bergey's Volume III? Low G+C Bacteria
What does the G & C stand for in Bergey's Volume II: Low G+C bacteria? Low G(uanine) + C(ytosine) - % of base pairs of GC is low
What are the low g+c bacteria? 1. Gram positive 2. Phylum Firmicutes
What are the bacteria in Phylum Firmicutes? 1. Clostridium 2. Veillonella 3. Mycoplasma 4. Bacillus 5. Lactobacillus 6. Staphylococcus 7. Streptococcus 8. Enterococcus
Describe Clostridium & Bacillus 1. Shape - clustered/rods 2. Form endospores
Describe Bacillus 1. aerobic or facultative 2. gram positive 3. rod-shaped 4. common species: B. anthracis
Describe Clostridium 1. strict anaerobes - common in soil 2. Common species: a. botulinum 2. tetani 3. perfringen 4. dificiles
What diseases are caused by the common species of Clostridium? 1. botulinum - botulism (food poisoning) 2. tetani - tetanus 3. perfringen - gas gangrene in wound infections 4. dificiles - hospital infections (in intestines)
Describe Veillonella 1. normal floura in human mouth 2. strict anaerobes 3. dental plaque
Describe Mycoplasma 1. wall-less bacteria 2. parasites in host cells when causing disease 3. hard to kill/control - can't target 4. antibiotics that work against cell walls 5. causes pneumonia
Describe Lactobacillus 1. associated with dairy products 2. used to produce yogurt 3. gram POSITIVE ROD 4. produces lactic acid 5. w/stands LOW pH 6. common normal vaginal floura (child bearing period) - balance of vaginal floura
Describe Staphylococcus 1. Gram Positive 2. Cocci (round) Grape-like clusters 3. Most are harmless 4. Causes skin infections 5. facultative anaerobes 6. S. aureus - hospital wound infections, toxic shock syndrome, food poisoning
Describe Streptococcus 1. Gram positive 2. oxidase - 3. catalase - 4. facultative anaerobes 5. appears in chains 6. S. pyogenes - scarlet fever, pharyngitis, rheumatic fever 7. S. agalactiae - newborn,neonatal sepsis
Describe Enterococcus 1. contaminants in hospital environment 2. highly resistant to antibiotics 3. E. faecalis & E. faecium - surgical wounds, urinary tract infection 4. facultative anaerobic
Created by: lophung
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