Summary Bacteria Flashcards

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1
Q

Staphylococcus

A
  • Gram positive, round bacteria. Forms grape-like structures with other bacteria.
  • Coagulase and Catalase negative.
  • Facultative anaerobes
  • It is a commensal bacterium, meaning it neither harms nor benefits its host that is getting its nutrients from unless in certain conditions (like immunocompromised).
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2
Q

Streptococcus

A
  • Gram positive
  • Catalase negative: cannot breakdown hydrogen peroxide - often cultured on BAP.
  • Round bacteria that tends to link to other bacteria in chain-link structures.
  • Many different types of strep. The best is to grow it on BAP and let it differentiate itself by hemolytic activity. (alpha, beta, gamma)
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3
Q

Mycobacterium

A
  • Small aerobic, non-motile, rod shaped bacteria.
  • It is a weak gram stain so an acid-fast stain is used.
  • TB & Leprosy
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4
Q

Clostridium

A
  • A gram-positive, anaerobic, spore-forming, bacillus bacteria that is often found in water/soil.
  • Botulism, Tetanus and Gas Gangrene
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5
Q

Legionalla

A
  • A gram-negative, aerobic (single flagella) bacterium.

- Legionnaires

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6
Q

Yersinia Pestis

A
  • A gram-negative, faculative anaerobe, bacillus. bacterium.

- Bubonic, pneumonic, septimic plagues.

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7
Q

Anthracis

A
  • A gram-positive, aerobic, rod-shaped, spore-forming bacterium.
  • Cutaneous, pulmonary , GI anthrax
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8
Q

Borrelia Burgdorferi

A
  • A motile (multiple flagella), anaerobic spirochete (negative strain required) bacterium.
  • Lymes Disease
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9
Q

Neisseria Gonorrhea

A
  • A gram-negative, diplococcic and fastidious bacterium. Best grown on a chocolate agar.
  • Gonorrhea
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10
Q

Treponema Pallidum

A
  • A gram-negtaive spirchote. The spirochete is thin so visualization like gram-staining is difficult.
  • Most often identified by dark-field microscopy.
  • Syphilis
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11
Q

Chlamydia Trachomatis

A
  • A gram-negative, non-motile rod bacterium. Must be grown on viable cells and not on agar media alone.
  • Chlamydia
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