MUST KNOW for each Microorganisms

Question 1

Organism also known as the VIETNAM ROSE

Answer 1

Neisseria gonorrhoeae

Question 2

Gram negative, oxidase positive, cocci

Answer 2

Neisseria & Moraxella

Question 3

Gram negative, semicircular diplococcus with flat opposing ends

Answer 3

Neisseria meningitidis

Question 4

Gram negative kidney shaped diplococcus with concave opposing ends

Answer 4

Neisseria gonorrhoea

Question 5

2nd most common cause of community acquired meningitis in adult

Answer 5

Neisseria meningtidis

Question 6

Infection of this organism commonly occur with a co-infection of Chlamydia trachomatis

Answer 6

Neisseria gonorrhoeae

Question 7

Causes Ophthalmia Neonatorum

Answer 7

Neisseria gonorrhoeae

Question 8

3rd most common cause of acute otitis media and sinusitis in children

Answer 8

Moraxella catarrhalis

Question 9

Presents as smooth, opaque, gray to white colonies with “Hockey puck’” like qualities on BAP

Answer 9

Moraxella catarrhalis

Question 10

Older colonies of Moraxella catarrhalis shows

Answer 10

Wagon-wheel appearance on BAP

Question 11

Butyrate Esterase positive organism

(This test may be used as a presumptive test for this organism)

Answer 11

Moraxella catarrhalis

Question 12

Neisseria gonorrhoeae & Neisseria meningitidis ferments

Answer 12

N. gonorrhoeae: Glucose
N.meningitidis: Glucose & Maltose

Question 13

Which Neisseria spp. can is often misidentified as N. gonorrhoeae

Answer 13

Neisseria cinerea

Question 14

Selective medium for Neisseriaceae

Answer 14

Thayer Martin Agar
Modified Thayer Martin Agar
Martin Lewis Agar
New York City Agar
GC-LECT

Question 15

This is a gram negative diplococci that is able to grow on BAP medium and can produce Gamma-glutamyl transferase

Answer 15

Neisseria meningitidis

N. gonorrhoeae does not grow on BAP and cannot produce GGT

Question 16

This gram negative organism shows growth on blood agar at 22°C and on nutrient agar at 35°C. Able to reduce nitrate to nitrite. A non-fermenter. Positive for DNase production

Answer 16

Moraxella catarrhalis

N. gonorrheae can only grow on CAP

Question 17

Gram negative encapsulated organism, able to grow on BAP

Answer 17

Neisseria meningitidis

Question 18

Physicial demonstrative sign of Meningitis
Principle: Severe neck stiffness causes a patient’s hips and knees to flex when the neck is flexed

Answer 18

Brudzinki’s Sign

Question 19

This is the most sever form of meningococcemia

Involves hemorrhage of the adrenals, shock, widespread purpura, DIC, thrombocytopenia, and adrenal insufficiency

Answer 19

Waterhouse-Friedreckson Syndrome

Question 20

CSF Findings suggestive of Meningitis

Answer 20

200-20,000 PMN’s
Glucose: low (<50mg/dL)
Protein: High (>50mg/dL)

Question 21

Most potent substance responsible for the manifestation of the Meningococcal dx

Answer 21

Endotoxin (Lipid A)