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Microbio > Unit 3: Chapter 21 > Flashcards

Unit 3: Chapter 21 Flashcards

Phylum Proteobacteria: gram negative

1
Q

The phylogenetic relationship among proteobacteria is based on ________

A

RNA studies

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2
Q

Proteobacteria

A

Gram negative
Chemoheterotrophic
Largest taxonomic group of bacteria

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3
Q

Alphaproteobacteria

A

grow with low level of nutrients and metabolically diverse

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4
Q

Purple Nonsulfur Bacteria

A

Alphaproteobacteria, Gram -
Anoxygenic photosynthesis
Shows exceptional metabolic flexibility
Polar flagella make most motile

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5
Q

Genus Caulobacter

A

Alphaproteobacteria, Gram -
Reproduce in unusual ways
Alternate between stalked cells and single polar flagella
Asymmetric binary fission to produce a flagellated swarmer cell that swims away

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6
Q

Order Rhizobiales

A

Alphaproteobacteria, gram -
Important N2 fixing bacteria
Symbiosis between plants
Plant pathogens

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7
Q

Rhizobium

A

Under order Rhizobiales and alphaprotebacteria (gram -)
Fix atmospheric nitrogen to ammonia in roots of leguminous plants
Make nitrogen available to plant host in exchange for carbon (SYMBIOSIS)

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8
Q

Agrobacterium

A

Under order Rhizobiales and alphaproteobacteria (gram -)
Plant pathogen
Invade crown, roots, and stems of many plants and transform plant cells into autonomously proliferating tumor cells

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9
Q

Gammaproteobacteria

A

Largest subgroup of proteobacteria and largest bacterial class

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10
Q

A. tumefaciens

A

Under Agrobacterium and order Rhizobiales
Can cause crown gall disease by means of tumor inducing (Pi) plasmid

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11
Q

Genus Burkholderia

A

Under gammaproteobacteria, gram -
Metabolic diversity: chemoorganotrophs, chemolithotrophs, photolithotrophs
Includes pathogen
Degrades and bioterrism agent

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12
Q

Burkholderia complex (Bcc)

A

under genus Burkholderia
degrades more than 100 organic molecules
biofilms formed in lungs of cystic fibrosis patients

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13
Q

B. Mallei

A

under genus Burkholderia
Bioterrism agent

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14
Q

Genus Neisseria

A

Under gammaproteobacteria, gram -
Gram negative cocci
Aerobic
Human pathogen: can cause gonorrhea and meningitis

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15
Q

Neisseria gonorrohoeae

A

Cause gonorrhea

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16
Q

Neisseria meningitidis and streptococcus pneumoniae

A

Cause meningitis

17
Q

Genus Bordetella

A

Under gammaproteobacteria, gram -
Aerobic coccobacilli chemoorganotrophs
Respiratory metabolism

18
Q

B. pertussis

A

Under Genus Bordetella
Causes whooping cough and kennel cough

19
Q

Genus Legionella

A

Under gammaproteobacteria, gram -
Transmitted through aerosolized water droplets
Activate stringent response –> encourages differentiation
Facultative intracellular parasites of amoebae and macrophages

20
Q

L. pneumophilia

A

Causative agent of atypical pneumonia

21
Q

Genus Coxiella

A

Under gammaproteobacteria, gram -
Transmitted through aerosis
Facultative intracellular parasite
Replicated form and environmental form

22
Q

Genus Pseudomonas

A

Under gammaproteobacteria, gram -
Opportunistic pathogens
Polar flagella
Obligate aerobe but flexible (can do aerobic and anaerboic respiration using nitrate or oxygen as final e- acceptor)
Degrade wide variety of organic molecules

23
Q

Genus Acinetobacter

A

Under gammaproteobacteria, gram -
Obligate aerobe
Outer membrane has lipooligosaccharide (LOS) which lacks O antigen –> contributes to antibiotic resistance
Nosocomial infection (infections in hospital)
Multidrug resistant

24
Q

Family Enterobacteriaceae

A

Under gammaproteobacteria, gram -
Peritrichously flagella (flagella cover entire bacteria)
Facultative anaerobe
Pathogens and mutualists

25
Q

The 2 groups of family Enterobacteriaceae are based on what

A

Fermentation products
1. Mixed acid fermenters
2. Butanediol fermenters

26
Q

Family vibrionaceae

A

Under gammaproteobacteria, gram -
Aquatic bioluminescent bacteria and pathogens

27
Q

Vibrio chlolerae

A

Under family vibrionaceae
Pathogen that causes cholera

28
Q

Genus Campylobacter

A

Epsilonproteobacteria, gram -
#1 cause of bacterial diarrheal illness and $1 intestinal disease

29
Q

Genus Helicobacter

A

Epsilonproteobacteria, gram -
Causes stomach cancer

Microbio (18 decks)

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