Domains of Bacteria and Archaea Flashcards
Largest taxonomic group
Proteobacteria
Proteobacteria are…?
all gram negative
The genera described are either…(3)
- Unique
- Medically important
- Environmentally benefical
Pelagibater is…(3)?
- A unique marine species and very small but abundant bacteria.
Pelagus “sea”, bacter “bacterium” - Does not causes disease in humans
- Fixes nitrogen
Caulobacter is…?
A motile organism that loses its flagella to form a stalk (holdfast) and anchor to surfaces.
Hyphomicrobium is…?
An organism that forms a hypha and adheres to surfaces opposite of the hypha.
Endotoxin vs exotoxin vs enterotoxin?
Endotoxin- toxin released when the cell is lysed.
Exotoxin is secreted toxin
Enterotoxin- secreted and affects the intestinal wall (enteric)
Rhizobium (3)
- Alphapro.
- Living in the root of legumes
- Cannot nitrogen fixate
Azospirillum (3)
- Alphapro.
- Lives on the plant surface
- It can N2 fixate “AZO”
Agrobacterium (3)
- Alphapro.
- Plant pathogen
- Cannot nitrogen fixate
Nitrobacter (3)
- Alphapro.
- Nitrification NO2 –> NO3
- Chemoautotroph
What is mostly reduced in nitrogen fixation?
Ammonia
What oxidizes NH4 to NO2?
Nitrosomonas
What is N2 to NH3?
Nitrogen Fixation
Denitrification is caused by (NO3» NO)?
Thiomargarita namibiensis
Bartonella (3)
- Alphapro.
- Facultative intracellular parasite
- An infected flea bites Piper the cat! Then Piper licks my wound and I get cat-scratch fever :(
Brucella (3)
- Alphapro
- Facultative intracellular parasite
- Infects cattle and spreads to humans via phagocytosis
A facultative intracellular parasite can reproduce where? (2)
Inside or outside the cell
An obligate intracellular parasite must reproduce where?
Inside the cell
“R”ickettsia (3)
- Alphapro.
- Highly pleomorphic and obligate
- Transmitted from ticks and insects to humans causing Rocky Mountain spotted fever.
Ehrlichia (2)
- Alphapro.
2. Similar to Rickettsia
What makes Wolbachia endosymbiotic? Reproduction?
Being the most infectious bacterial genus in the world, Wolbachia can infect insects and is used for biological control. For example, Mosquitos that carry the Dengue virus cannot spread it if they are infected with Wolbachia and it does not kill the organism but it infects its eggs.
Betaproteobacteria are (2)
- All aerobic
2. Chemo auto and heterotrophs
The sulfur cycle involves which organism?
Thiobacillus organism
Burkholderia (2) (BETA)
- B. cepacia found in onions and highly problematic in hospitals.
- B. pseudomallei
Bordetella (2)
- Betapro.
2. B. pertussis causes “whooping cough”
Neisseria (3)
- Betapro.
- N. meningitidis causes meninigococcal meningitis
- N. gonorrhoeae causes gonorrhoeae
Gammaproteobacteria is ?
The largest subgroup of proteobacteria
Actinobacteria is ?
Facultative anaerobes
Nocardia, Mycobacterium, and Actinomyces are?
Actinobacteria
High GC content is found in?
Actinobacteria
Mycoplasmas are ?
Tenericutes
What Firmicuties gives you diarrhea? (LEAK -lec) (3)
Listeria monocytogenes!
Enterococcus
Clostridium
What Firmicutie is in love with your blood?
(beta) Streptococcus. Clear blood plate
Gamma-streptococcus love blood? (T/F)
False
What Firmicutie is found in Yoplait?
Lactobacillus!
What Firmicutie is found on your skin?
Staphylococcus aureus
What organism causes pimples (acne)?
Propionibacterium acnes (P. acnes)
What Firmicutie are endospores rods?
Bacillus
Firmicutes are gram negative? (T/F)
False!
Nonproteobacteria are gram negative? (T/F)
True!
Cyanobacteria (2)
- Nonpro.
2. blue and green bacterian
Purple and green are all in different phylum? (T/F)
True!
Gemmata obscuriglobus Planctomycetes is nonpro or gammapro?
Nonpro.
Is Chlamydia trachomatis a medically important species? (T/F)
True
Spirochaetes are coiled, which species causes Lyme Disease (BB)?
Borrelia burdgorferi (Lyme Disease)
Salvarsan eradicated which species of nonproteobacteria?
Treponema pallidum
Does Fusobacterium have a rod shape? (T/F) Which shape?
False, it has a spindle shape.
Campylobacter and Heliobacter are epsilonproteobacteria and what else? ?
Microaerophilic
Myxococcus are spore like and deltaproteobacteria? (T/F)
True
Bdellovibrio is gram-negative and what else suckaaa?
Leech to other G-N bacteria.
Pasteurella is what Class ?
Gammaproteobacteria
H. influenzae is the flu? (T/F) Which is it?
False, H. influenzae is the causes of bronchitis
Pasteurella is found in which dragon?
Komodo Dragon?
E. aerogenes is under what order
Enterobacteriales
Enterobacteriales is under which phylum?
gammaproteobacteria
Proteus has rings? T/F
True
Serratia has a red pigment T/F
True
A. baumanii concerns?
Acinetobacter rapidly resistant to antibiotics
Moraxella can cause conjunctivitis? T/F
True