ID scheme for G- bacteria

Question 1

G- Cocci

growth in air (no)

Answer 1

Veillonella

Question 2

G- Cocci

growth in air (yes)

Answer 2

Neisseria

Question 3

G- Cocci
growth in air (yes)
growth on Thayer-Martin medium (no)

Answer 3

Neisseria spp.

not relevant to us

Question 4

G- Cocci
growth in air (yes)
growth on Thayer-Martin medium (yes)

Answer 4

N. lactamica
N. gonorrhoeae
N. meningitidis

Question 5

G- Cocci
growth in air (yes)
growth on Thayer-Martin medium (yes)
ONPG (yes)

Answer 5

N. lactamica

Question 6

G- Cocci
growth in air (yes)
growth on Thayer-Martin medium (yes)
ONPG (no)
uses Glucose (yes)
uses Maltose (no)

Answer 6

N. gonorrhoeae

Question 7

G- Cocci
growth in air (yes)
growth on Thayer-Martin medium (yes)
ONPG (no)
uses Glucose (yes)
uses Maltose (yes)

Answer 7

N. meningitidis

Question 8

G- Bacilli
growth in air (no)
Kanamycin 1000 g (S)

Answer 8

Fusobacterium

Question 9

G- Bacilli
growth in air (no)
Kanamycin 1000 g (R)

Answer 9

Porphyromonas

Prevotella

Question 10

G- Bacilli
growth in air (no)
Kanamycin 1000 g (R)
Penicillin, 2U (R)

Answer 10

B. fragilis

Question 11

G- Bacilli
growth in air (no)
Kanamycin 1000 g (R)
Penicillin, 2U (S)

Answer 11

Bacteroides spp. (not relevant to us)