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BMSC 210 > Lecture 16: Phylogenetic Diversity of Bacteria > Flashcards

Lecture 16: Phylogenetic Diversity of Bacteria Flashcards

1
Q

major linages of bacteria assumes ( )

A

common ancestor

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2
Q

how many phyla are there

A

4

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3
Q

what is the largest & most diverse phyla

A

proteobacteria

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4
Q

what type of bacteria is proteobacteria

A

gram negative

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5
Q

what are the 6 classes that proteobacteria is divided into?

A
  1. alpha
  2. beta
  3. delta
  4. gamma
  5. epsilon
  6. zeta
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6
Q

what type of infection do alphaproteobacteria cause

A

intracellular infection

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7
Q

most aerobes in alphaproteobacteria are

A

obligate or facultative

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8
Q

what type of bacteria are oligotrophic

A

alphaproteobacteria

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9
Q

oligotrophic

A

grow at low nutrient concentrations

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10
Q

what does Rickettsia cause?

A

causes Typhus

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11
Q

Typhus

A

rocky mountain spotted fever

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12
Q

how is Rickettsia transmitted

A

through ticks, fleas, lice & mites

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13
Q

does Rickettsia have cell walls?

A

yes

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14
Q

where does replication of Rickettsia occur

A

cytoplasm

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15
Q

what is the 3rd largest class of proteobacteria?

A

Betaproteobacteria

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16
Q

what is the major order of Betaproteobacteria?

A

Neisseriales

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17
Q

what is the major order of Alphaproteobacteria?

A

Rickettsiales

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18
Q

Niesseria shape

A

cocci

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19
Q

what pathogen is associated with Niesseria

A

meningitides

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20
Q

what is the largest & most diverse class of proteobacteria

A

gammaproteobacteria

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21
Q

Enterobacteria

A

enteric bacteria

22
Q

what 3 acids are involved in mixed-acid fermentation

A

acetic, lactic & succinic

23
Q

what does Escherichia effect?

A

warm blooded animals

24
Q

what does salmonella cause

A

typhoid fever & gastro

25
Q

what does shigella cause

A

bacillary dysentery

26
Q

what does proteus cause?

A

UTI

27
Q

where are enterobacteria aerogenes found?

A

water & sewage

28
Q

where is Klebsiella found?

A

soil & water

29
Q

where is serratia found?

A

water, soil & intestinal tracts

30
Q

what is P. aeruginosa associated with

A

urinary & respiratory diease

31
Q

Pseudomonadales vs Vibrionales

A

P- oxidase & catalase positive
V- Oxidase positive only

32
Q

V. Cholera

A

causes water borne disease in humans not hosts

33
Q

what does V. parahaemolyticus cause

A

causes gastro

34
Q

T or F: Tenericutes lack cell walls

A

True

35
Q

lactic acid bacteria

A

fermentative bacteria that produce lactic acid

36
Q

aerotolerant anaerobes

A

not sensitive to oxygen

37
Q

Homofermentative

A

produce only lactic acid

38
Q

Heterfermentative

A

produce ethanol, CO2 & lactate acid

39
Q

what do clostridium lack?

A

respiratory chain

40
Q

what do saccharolytic do

A

ferment sugars

41
Q

what do proteolytic do

A

ferment amino acids

42
Q

what are the smallest organisms

A

mollicutes/mycoplasmas

43
Q

lipoglycan functions

A

stabilize cytoplasmic membrane & facilitate attachment

44
Q

what shape is actinobacteria

A

rod-shaped

45
Q

what are the 6 steps of the infection cycle of a chlamydia

A
  1. attack
  2. phagocytosis
  3. conversion
  4. multiplication
  5. conversion to elementary body
  6. release
46
Q

what is an example of a non-spore forming firmicute

A

staphlyococcus

47
Q

what is an example of a spore forming firmicute

A

Bacillius

48
Q

what type of bacteria are firmicutes

A

gram positive

49
Q

what are firmicutes

A

endospore formers

50
Q

do mycoplasmas have a cell wall?

A

no

BMSC 210 (16 decks)

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