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Bacteriology Final > General Overview > Flashcards

General Overview Flashcards

1
Q

Bacteria have a nucleus.

True or false?

A

False (prokaryotes don’t have a nucleus)

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2
Q

Bacteria have chemically complex cell walls.

True or false?

A

True

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3
Q

Bacteria have no plasma membrane or cell wall?

True or false?

A

True

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4
Q

Bacterial cell division is by mitosis?

True or false

A

false (binary fission)

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5
Q

Bacteria have histones?

True or false?

A

False

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6
Q

Unique cell wall component of a GRAM POSITIVE bacteria.

A

Lipoteichoic acid (for antigenicity)

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7
Q

Unique cell wall component of GRAM NEGATIVE bacteria.

A

Lipopolysaccharide (LPS)

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8
Q

Unique cell wall component of mycobacteria.

A

Mycolic acid

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9
Q

Lipid A is an endotoxin. True or false?

A

True

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10
Q

How do bacteria and fungi cause disease (pathogenesis)?

A

complex interaction between host, pathogen and environment

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11
Q

what is a pathogen?

A

a microbe that can cause disease

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12
Q

What is pathogenesis?

A

Mechanism by which cause disease

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13
Q

What is virulence?

A

degree of pathogenicity includes severity

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14
Q

What are virulence factors?

A

properties or traits found in isolates that cause disease but which are not found in isolates of the same species that lack the ability to cause disease

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15
Q

What is predisposition?

A

what predisposes an animal to infectious disease

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16
Q

The majority of bacteria are intracellular pathogens. True or false?

A

False (majority are extracellular pathogens)

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17
Q

What disease causes a type IV hypersensitivity?

A

Tuberculosis

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18
Q

What are some gram positive cocci?

A
  • Staphylococcus
  • streptococcus
  • enterococcus
  • micrococcus
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19
Q

What are some acid fast partial bacteria?

A
  • corynebacterium
  • rhodococcus
  • nocardia
20
Q

What is a true acid fast bacteria?

A

mycobacterium

21
Q

What are some gram negative anaerobes?

A
  • fusobacterium
  • bactericides
  • dichelobacter
22
Q

Gram negative cocci are not common clinical isolates? True or false?

A

True

23
Q

What are gram negative spirochetes?

A
  • Brachyspira
  • Borrelia
  • leptospira
  • Treponema
24
Q

What are some spiral gram negative bacteria?

A
  • campylobacter
  • helicobacter
  • lawsonia
25
Q

What are some vector borne bacteria?

A
  • rickettsia
  • neorickettsia
  • anaplasma
  • ehrlichia
  • aegyptinella
  • coxiella
26
Q

What are some cell wall deficient bacteria?

A
  • mycoplasma

- ureaplasma

27
Q

What specific sterol is present in fungi?

A

ergosterol

28
Q

Fungi contain peptidoglycan too. True or false?

A

False (glucan, mannan, chitin)

29
Q

What is the unicellular form of fungi called?

A

yeast

30
Q

What is the multicellular form of fungi called?

A

mold or hyphae

31
Q

What are some hyaline fungi?

A

Apergillus and Dermatophytes

32
Q

What are some yeasts?

A
  • candida
  • Malassezia
  • Cryptococcus
33
Q

What are some dimorphic fungi?

A
  • Blastomyces dermatitidis
  • Histoplasma capsulatum
  • Coccidioides immitis
  • Sporothrix schenckii
34
Q

What are some fungal like organisms?

A
  • pythium
  • lagenidium
  • prototheca
35
Q

What are some laboratory diagnosis that detects antibodies?

A
  • ELISA
  • agglutination
  • precipitation
  • immunochromatography
36
Q

detection of cell mediated immune response?

A
  • intradermal tests (tuberculin tests)

- lymphocyte proliferation test

37
Q

What are two types of antimicrobial susceptibility testing (AST)?

A
  • disk diffusion test (Kirby Bauer test)

- broth/agar dilution test

38
Q

What is MIC?

A

the minimum amount of drug required to inhibit bacterial growth

39
Q

Drugs with lower MIC values are a better choice for treatment. True or false?

A

True

40
Q

What is susceptibility break point?

A
  • drug concentration above is resistant

- below is susceptible to that drug

41
Q

For disk diffusion test you must use a bacterial isolate in pure culture. True or false?

A

True

42
Q

What are organisms with innate resistance?

A
  • enterococcus
  • enterobacter
  • pseudomonas
  • actinetobacter
43
Q

What are extended spectrum beta lactamase bacteria?

A

E. coli and Klebsiella sp.

44
Q

Fluroquinolone are resistant to what bacteria?

A

Campylobacter jejuni

45
Q

Multiple drug resistant bacteria?

A

E. coli and salmonella

46
Q

MDR and XDR bacteria?

A

Mycobacterium pseudotuberculosis

47
Q

Griseofulvin does what?

A
  • bind to mitotic spindles
  • inhibits mitosis
  • PO
  • used for dermatophytes

Bacteriology Final (5 decks)

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