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Lab Medicine > Intro to Medical Microbiology > Flashcards

Intro to Medical Microbiology Flashcards

1
Q

Where do you primarily see staph and strep?

A

Skin

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2
Q

Where do you primarily see staph and strep?

A

Skin

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3
Q

Where is strep normally limited to?

A

Pharynx, mouth

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4
Q

What does normal flora do

A

Competes with pathogenic microorganisms

Aids digestion and produces essential vitamins (folic acid and Vit K)

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5
Q

what is the presence of an organism in a culture that was not there when the sample was taken?

A

Contamination

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6
Q

how do you test for bacteria in blood?

A

Do 2 draws, if both draws have the bacteria- it is probably in the blood

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7
Q

WHat is : Colonization and/or invasion and multiplication of pathogenic microrganisms in the host with or without the manifestation of disease

A

infection

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8
Q

how are organisms classified

A

Kingdom
Phyllum (family)
Genus
Species

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9
Q

Which is smaller- viruses or bacteria?

A

virus

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10
Q

What are some diseases fungi can cause?

A

Thrush
athletes foot
invasive and allergic aspergillosis

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11
Q

What are some diseases fungi can cause?

A

Thrush
athletes foot
invasive and allergic aspergillosis

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12
Q

Where is strep normally limited to?

A

Pharynx, mouth

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13
Q

What does normal flora do

A

Competes with pathogenic microorganisms

Aids digestion and produces essential vitamins (folic acid and Vit K)

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14
Q

what is the presence of an organism in a culture that was not there when the sample was taken?

A

Contamination

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15
Q

how do you test for bacteria in blood?

A

Do 2 draws, if both draws have the bacteria- it is probably in the blood

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16
Q

WHat is : Colonization and/or invasion and multiplication of pathogenic microrganisms in the host with or without the manifestation of disease

A

infection

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17
Q

how are organisms classified

A

Kingdom
Phyllum (family)
Genus
Species

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18
Q

Which is smaller- viruses or bacteria?

A

virus

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19
Q

What are the two types of fungi?

A

Yeasts and mold

20
Q

What are some diseases fungi can cause?

A

Thrush
athletes foot
invasive and allergic aspergillosis

21
Q

Organism that lives on or in a host and gets its food from or at the expense of its host

A

Parasite

22
Q

What are the three morphological categories in which bacteria fall in?

A

cocci
bacilli
spirilla

23
Q

What are the most common shapes of bacteria?

A

Rod
cocci (round)
spiral

24
Q

Does gram positive or gram negative have an outer membrane?

A

Gram-negative

25
Q

Does gram positive or gram negative bacteria have more peptidoglycan?

A

Gram-positive

26
Q

Which type bacteria have teichoic acid?

A

gram positive

27
Q

what type bacteria retains the crystal violet stain and appears deep violet-blue (black)

A

gram positive

28
Q

What type bacteria have a thick lipopolysaccharide layer and little or no teichoic acid?

A

gram negative

29
Q

Thin needle shape gram negative rods are characteristic of what?

A

Flusobacterium

30
Q

Clusters of gram positive cocci is characteristic of what?

A

Staphylococcus such as S. aureus

31
Q

Chain or pairs of gram positive cocci (GPC) is usually characteristic of what?

A

Streptococcous, such as S. pneumoniae

32
Q

Thick gram positive rods is usually characteristic of what?

A

Clositridum such as C. perfringenes, C. difficile, C. tetani

33
Q

Thin gram positive rods is usually characteristic of what?

A

Listeria

34
Q

Gram negative cocci (GNC), diplococci is usually characteristic of what?

A

Neisseria such as N. meningitidis or N. gonorrhoea

35
Q

Gram negative cocci (GNC), coccobacilli usually characteristic of what?

A

Acinetobacter (can be either GP or GN)

36
Q

how do you test for beta hemolytic strep?

A

hemolysis test

37
Q

Gram negative rods (GNR) coccobacilli are usually consistent with what?

A

Haemophilus such as H. influenzae

38
Q

Curved gram negative rods is consistent with what?

A

Vibrio or Campylobacter wuch as V. cholerae, C. jejuni

39
Q

Thin needle shape gram negative rods are characteristic of what?

A

Flusobacterium

40
Q

List the gram positive bacteria of the staphylococcus species?

A 
S. aureus (coagulase positive)
Methicillin-resistant S. aureus
S. epidermidis 
S. saprophyticus
S. lugdunensis
S. capitis
S. haemolyticus
S. schleiferi
41
Q

Organisms that are able to perform either aerobic respiration or anaerobic respiration depending on the oxygen content of their environment are what?

A

facultative anaerobic respiration

42
Q

Do myocbacterium readily stain?

A

No, not with ordinary dyes

43
Q

What are catalase positive bacteria?

A

Staphylococcus

micrococcus

44
Q

What are catalase negative bacteria?

A

streoptococcus

enterococcus

45
Q

what type bacteria is coagulase positive?

A

Staphylococcus aureus

46
Q

how do you test for beta hemolytic strep?

A

hemolysis test

Lab Medicine (12 decks)

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