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Micro Biology > Chapter 21 > Flashcards

Chapter 21 Flashcards

gram negative pathogens

1
Q

vibrio def

A

curved rods

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2
Q

where are vibrio found

A

in water environments

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3
Q

cholera is a what

A

vibrio

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4
Q

where is cholera usually found

A

in areas with poor sewage and water treatment

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5
Q

what is the most important virulence factor in cholera

A

cholera toxin

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6
Q

helicobacter pylori is what

A

slightly helical motile bacterium

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7
Q

where is heliobacter pylori found

A

colonizes in the stomach of its hosts

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8
Q

helicobacter pylori virulence factors

A

proteins that inhibit production of stomach acid
enzymes that help neutralize stomach acid
flagella to burrow in stomach lining
adhesins to facilitate binding to gastric cells

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9
Q

spirochetes look like

A

thin, tighty coiled, helically shaped bacteria

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10
Q

how do spirochetes move

A

in a corkscrew fashion

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11
Q

3 types of spirochetes are what

A

treponema , borrelia, and leptospira

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12
Q

treponema example

A

treponema pallidum

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13
Q

info about treponema pallidum

A

causative agent of syphilis
is transmitted mostly via sexual contact

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14
Q

borrelia ex

A

borrelia burgdorferi

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15
Q

borrelia burgdorferi causes what

A

lyme disease, gets to humans via tick bites

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16
Q

how many blood meals does a deer tick have in a lifetime

A

3

17
Q

do deer tick larve carry borrelia bacteria when they hatch

A

no, they get it through blood meals

18
Q

lyme disease 3 phases

A

expanding red bulls eye rash
neurological symptoms and cardiac dysfunction
severe arthritis

19
Q

example of leptospira

A

leptospira interrogans

20
Q

what do leptospira interrogans look like

A

motile, obligately aerobic bacteria

21
Q

where are leptospira interrogans found

A

in wild and domestic animals

22
Q

how to leptospira interrogens infect

A

they enter through thte skin or mucous membrane and travels via the bloodstream

23
Q
A

Micro Biology (19 decks)

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