Lab 9- Moraxella

Question 1

Habitat

Answer 1

Mucous membranes, upper respiratory way and conjunctiva

Question 2

Morphology

Answer 2

1-3 um coccoid rods, capsule, pairs

Question 3

Staining

Answer 3

Gram -

Question 4

Resistance

Answer 4

Weak

Question 5

Subgenera + species

Answer 5

Moraxella
Branhamella

Species:
M. (M) lacunata
M. (M) bovis
M. (B) ovis

Question 6

M. (M) bovis has fimbria ?

Answer 6

Yes

Question 7

Culture

Answer 7

Fastidious
Blood agar
Beta hemolysis

Question 8

Biochem

Answer 8

Catalase +
Oxidase +

Extracellular enzymes
Proteases, hyaluronidase, fibrinolysine

Question 9

Antigens

Answer 9

7 fimbria groups

Question 10

Pathogenicity

Answer 10

M. (M) bovis = cattle infectious kerato-conjunctivitis (pink eye )

M. (M) ovis faculative pathogenic
Kerato-conjunctivitis of sheep, goats, young calves