VBS 4 Micro

Question 1

Mycobacterium spp.

Answer 1

• poor gram stain, + if picked up (thick lipid cell wall)
• ACID FAST (Ziehl stain)
• rod
• aerobic
• facultative intracellular
• non-spore forming
• catalase/oxidase +/-
• non-motile
• pleiomorphic
• pneumonia
• granulomatous lesions in lungs

Question 2

Mycoplasma spp.

Answer 2

• NO cell wall - no gram stain
• facultative anaerobe
• catalase/oxidase -/-
• pleiomorphic
• pneumonia
• rhinitis, conjunctivitis, nasal d/c

Question 3

Staphylococcus spp.

Answer 3

• Gram+
• cocci in clusters
• facultative anaerobe
• (usually) Beta-hemolytic
• catalase/oxidase +/-
• coagulase +
• pyoderma, dermatitis

Question 4

Streptococcus spp.

Answer 4

• Gram+
• cocci in chains
• facultative anaerobe
• (usually) Beta-hemolytic
• catalase/oxidase -/-
• pyoderma, dermatitis

Question 5

Pseudomonas spp.

Answer 5

• Gram-
• rod
• strict aerobe
• Beta-hemolytic
• catalase/oxidase +/+
• monotrichous flagella
• grape/sweet odor!!
• skin?

Question 6

Aeromonas spp.

Answer 6

• Gram-
• rod
• facultative anaerobe
• non-spore forming
• catalase/oxidase +/+
• monotrichous flagella
• aquatic –> forms biofilms
• pneumonia
• mouth rot (infectious stomatitis)
• septicemia

Question 7

Salmonella

Answer 7

• Gram-
• facultative anaerobe
• non-spore forming
• facultative intracellular
• catalase/oxidase +/-
• peritrichious flagella
• cause granulomatous inflammation
• diarrhea - secretory

Question 8

Fusobacterium necrophorum

Answer 8

• Gram-
• rod
• anaerobic
• non-spore forming
• catalase/oxidase -/-
• non-motile
• REPTILES: abscess-forming
• ruminants: foot rot, liver abscesses