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Pathology and Laboratory Science > Gram stains of different organisms > Flashcards

Gram stains of different organisms Flashcards

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Biology 101 flashcards
1
Q

Streptococcus pneumoniae

A

Gram positive diplococci
Alpha haemolytic - green on blood agar
Facultative anaerobe

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2
Q

Streptococcus pyogenes

A 
Gram positive (group A strep) diplococci
Facultative anaerobe
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3
Q

Haemophilus influenzae

A

Gram negative coccobacillus

Facultative anaerobe

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4
Q

Moraxella catarrhalis

A

Gram negative diplococcus

Aerobic

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5
Q

Escherichia coli

A

Gram negative rod

Facultative anaerobe

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6
Q

Klebsiella spp.

A

Gram negative

Facultative anaerobes

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7
Q

Corynebacterium diphtheriae

A

Gram positive rod (bacillus)

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8
Q

Neisseria gonorrhoeae

A

Gram negative coffee-bean shaped diplococcus

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9
Q

Bacteroides fragilis

A

Gram negative bacilli

Anaerobic (dominant gut microbe)

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10
Q

Bordetella pertussis

A

Gram negative rod

Aerobe

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11
Q

Campylobacter jejuni

A

Gram negative rod

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12
Q

Chlamydia trachomatis

A 
Gram negative (ovoid shape)
Obligate intracellular bacteria
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13
Q

Clostridium difficile

A

Gram positive

Anaerobe

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14
Q

Coliforms

A

= Gram negative bacteria

Includes - E. coli, Proteus mirabilis, Klebsiella

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15
Q

Enterococcus faecalis

A

Gram positive coccus - single, pair or chains

Aerobe

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16
Q

Gardnerella vaginalis

A

Gram variable - clue cells on Gram stain

Facultative anaerobe

17
Q

Helicobacter pylori

A

Gram negative rod (curved/spiral shaped)

18
Q

Listeria monocytogenes

A

Gram positive rod

19
Q

Legionella

A

Gram negative rod

20
Q

Mycoplasma

A

No cell wall - don’t hold Gram stain

21
Q

Neisseria meningitidis

A

Gram negative diplococci (coffee-bean shaped)

22
Q

Peudomonas aeruginosa

A

Gram negative rod

23
Q

Staphylococcus epidermidis

coagulase?

A

Gram positive coccus

Coagulase negative

24
Q

Staphylococcus aureus

coagulase?

A

Gram positive

Coagulase positive

25
Q

Treponema pallidum

A

Syphilis

Gram negative spirochete (spiral shaped)

26
Q

Streptococcus agalactiae

A

Gram positive coccus that forms chains

Beta-haemolytic (clear on blood agar)

27
Q

Mycobacterium tuberculosis

A

Impervious to Gram staining (waxy coat)

Acid-fast bacillus - use Ziehl-Neelsen staining

Pathology and Laboratory Science (4 decks)

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