Bacterial taxonomy (Pg. 125)

Question 1

Gram ⊕ Spherical (coccus)

Answer 1

Staphylococcus (clusters)
Streptococcus (chains or pairs)
Enterococcus (pairs or short chains)

Question 2

Gram ⊝ Spherical (coccus)

Answer 2

Moraxella catarrhalis

Neisseria

Question 3

Gram ⊕ Rod (bacillus)

Answer 3

Bacillus
Clostridium
Corynebacterium
Gardnerella (gram variable)
Lactobacillus
Listeria
Mycobacterium (acid fast) Propionibacterium

Question 4

Gram ⊝ Rod - Respiratory

Answer 4

• Bordetella
• Burkholderia cepacia
• Haemophilus (pleomorphic)
• Legionella (silver stain)

Question 5

Gram ⊝ Rod - Zoonotic

Answer 5

• Bartonella
• Brucella
• Francisella
• Pasteurella

Question 6

Gram ⊝ Rod - Enteric

Answer 6

• Bacteroides
• Campylobacter
• E coli
• Enterobacter
• Fusobacterium
• Helicobacter
• Klebsiella
• Proteus
• Pseudomonas
• Salmonella
• Serratia
• Shigella
• Vibrio
• Yersinia

Question 7

Gram ⊝ Branching filamentous

Answer 7

• Actinomyces

- Nocardia (weakly acid fast)

Question 8

Gram ⊕ Pleomorphic (no cell wall)

Answer 8

• Anaplasma
• Ehrlichia
• Chlamydiae (Giemsa)
• Rickettsiae (Giemsa)
• Mycoplasma (contains sterols, which do not
  Gram stain)

Question 9

Gram ⊕ Spiral

Answer 9

Spirochetes:

• Borrelia (Giemsa)
• Leptospira
• Treponema