bacteria

Question 1

Gram positive cocci

Answer 1

Catalase positives:
S. aureus - coagulase +
S. epidermidis - coagulase -

Catalase negative:
S. pyogenes
S. agalactiae
S. pneumoniae
Enterococcus faecalis

Question 2

Gram positive rods

Answer 2

Aerobes: Bacillus cereus

Facultative anaerobes: L. monocytogenes

Anaerobes (spore formers):
C. perfringens
C. tetani
C. botulinum
C. difficile

Question 3

Gram negative cocci

Answer 3

Neisseria meningitidis

Question 4

Gram negative rods

Answer 4

Aerobes: Pseudomonas aeruginosa

Facultative anaerobes, lactose fermenters (coliforms):
Klebsiella
E coli
Enterobacter

Facultative anaerobes, non-fermenters:
Proteus
Salmonella
Yersinia
Shigella

Question 5

Non-gram staining bacteria

Answer 5

Rods:
Chlamydia
Rickettsia

Mycoplasma spp.
Mycobacterium spp.

Question 6

Anaerobes - gram positive cocci

Answer 6

Peptostreptococcus

Question 7

Anaerobes - gram positive rods

Answer 7

Actinomyces (branching rods)
Clostridium (botulinum, difficile, perfringens, tetanii)
Propionibacterium
Bifidobacterium
Lactobacillus
Corynebacterium

Question 8

Anaerobes - gram negative cocci

Answer 8

Veillonella

Acidoaminococcus

Question 9

Anaerobes - gram negative rods

Answer 9

Bacteroides
Fusobacterium
Porphyromonas
Prevotella

Question 10

Spirochetes - Treponema spp

Answer 10

Treponema pallidum ssp:

• pallidum: Syphilis
• endemicum: Bejel
• pertenue: Yaws

Treponema carateum: Pinta

Question 11

Spirochetes - Borrelia spp

Answer 11

burgdorferi: lyme disease (borreliosis)
recurrentis: epidemic relapsing fever
Many species: endemic relapsing fever

Question 12

Spirochetes - Leptospira

Answer 12

interrogates - Leptospirosis (Weil’s disease)