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Biochem > Micro Exam 3 > Flashcards

Micro Exam 3 Flashcards

1
Q

What are the characterstics of proteobacteria?

A

gram negative, chemoheterotrophic,largest taxonomic group

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2
Q

biofilm

A

a microbial community that forms in layers on a surface

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3
Q

siderophores

A

proteins secreted by pathogens that bind more tightly to iron

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4
Q

toxins

A

poisonous substances produced by microorganisms

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5
Q

toxemia

A

Prescence of a toxin in the host blood.

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6
Q

intoxication

A

Prescence of toxin without microbial growth

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7
Q

toxigenicity

A

ability of an organism to produce a toxin.

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8
Q

exotoxin

A

produced inside of the cell and secreted out (Exo)

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9
Q

antitoxins(emergency treatment)

A

antibodies against specific toxins

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10
Q

toxoids

A

inactivated toxins used in vaccines.

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11
Q

superantigen(exotoxin)

A

produce an intense immune response due to release of cytokine cells

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12
Q

genotoxins(exotoxins

A

mutations in DNA

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13
Q

shock

A

life threatening decrease in blood pressure

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14
Q

ID 50

A

infectious dose for 50 percent of the population

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15
Q

LD 50

A

lethal dose for 50 percent of the population

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16
Q

adhesins and ligands?

A

bind to the receptor present on host cells

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17
Q

IGA proteases

A

destroy IGA antibodies

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18
Q

kinases

A

digest fibrin clots

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19
Q

collagenase

A

breaks down collagen

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20
Q

coagulase

A

coagulate fibroin

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21
Q

hylauranase

A

digest polysaccharides

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22
Q

systemic infection

A

infection throughout the whole body

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23
Q

focal infection

A

began as local infection and becomes systemic

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24
Q

local infection

A

limited to small area of body

25
Q

sepsis

A

toxic imflamatory condition arising from spread of microbes from infection

26
Q

toxemia

A

toxins in the blood

27
Q

bacteremia

A

bacteria in the blood

28
Q

What is e coli?

A

gram negative facultative anarobe rod shapped found in gut

29
Q

What is e coli used for?

A

fecal indicator bacteria to indicate contamination

30
Q

what causes typhoid fever ?

A

samanella typhi

31
Q

What is enterobacteria

A

salmonella, e coli,

32
Q

How many species of salmanella are there ?

33
Q

What causes food poisoning

A

salmonella typhimurium

34
Q

common sources of salmonella

A

undercooked chicken raw eggs

35
Q

What is shigella enterobacteria

A

causes dysentery

36
Q

Yersinia enterobacteria

A

causes plague

37
Q

Serratia

A

red in color causes UTI found in saline

38
Q

klebselia

A

in soil and water causes pnemonia

39
Q

What is bdelivibrio

A

this is a delta proteobacteria

40
Q

what does bdelivibrio

A

preys on cells and elongates to replicate

41
Q

What is heliobacter

A

Epsilon proteobacteria causes H pylori infection found in stomanch

42
Q

cambloyobacter

A

found in cattle or sheep

43
Q

characteristics of epsilon protobacteria

A

helical and slender in shape

44
Q

deinococus

A

bacteria that is highly reistant to radioadition

45
Q

What is thermis aquatis

A

where TAQ polymrase for PCR comes from very stable

46
Q

Where is thermos found in

A

hot springs extreme heat , yellowstone

47
Q

streptococcus gram positive

A

strep throat

48
Q

What are characteristics of mycoplasma

A

smallest free living organism and bacteria no cell wall

49
Q

staphylococcus areus

A

gram positive grows in clusters responsible for MRSA

50
Q

droplet transmission

A

transmission through the air less than 1 meter

51
Q

indirect formite transmission

A

spread by nonliving item

52
Q

airborne transmission

A

travels more than 1 meter

53
Q

vehicle transmission

A

transmission from inanimate reservoir

54
Q

vehicle transmission

A

air, water ,food or bodily fluid

55
Q

incidence

A

number of new cases of a disease during a time period

56
Q

prevalence

A

Old and new cases added together. The number of people who have something at any given time

57
Q

prevalence

A

number of people who have disease

Biochem (9 decks)

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