Gram negative

Question 1

Endotoxins of Gram negative bacteria are composed of

Answer 1

Lipopolysaccharide

Question 2

Leading cause of Fatal bacterial meningitis (FBM)

Answer 2

N. meningitidis

ABM - P.neumoniae

Question 3

1 cause of Sexually transmitted infection (STI)

Answer 3

Gonorrhea caused by N.gonorrhoeae

Question 4

Bean-shaped diplococci sensitive to SPS

Answer 4

B.meningitidis

G.vaginalis
- inhibited also by SPS
- Gram (+) Cat (-) Non-sporeforming

Question 5

T/F:

I. N. gonorrhoeae ferments both glucose and maltose
II. N.meningitidis ferments glucose only
III. M. catarrhalis is capable of fermenting the three sugars

Answer 5

both are FALSE

NG: glucose only
NM: glucose and maltose
NL: glucose, maltose, and lactose
MC: Does not ferment sugar

Question 6

Bacteria that causes disseminated intravascular coagulation (DIC)

Answer 6

N. meningitidis

Question 7

Bacteria causing Waterhouse Friedrichsen Syndrome

Answer 7

N. meningitidis

• Waterhouse Friedrichsen Syndrome is a severe form of Meningococcemia caused by neisseria.

Question 8

Diseases caused by N.meningitidis

Answer 8

• Bacterial meningitis
• Meningococcemia

Question 9

Agar used for culture of N.gonorrhoeae

Answer 9

• CA
• Thayer martin (VCN)
• Modified thayer martin (VCN-T)
• Martin-lewis (VCAn-T)
• New York city media (VCAm-T)
• GC lectin media (VCAm-TL)

Question 10

The only catalase (-) organism in Neisseria

Answer 10

N.elongata

Question 11

Causes OTITIS MEDIA

Answer 11

-S.pneumoniae
- M.catarrhalis

Question 12

Confirmatory test for Neisseria gonorrhoeae

Answer 12

CHO utilization test In CTA (cysteine-trypticase agar)

• NG only ferments glucose

Question 13

T/F:

I. Neisseira spp. are catalase (+)
II. Moraxella catarrhalis is catalase and oxidase (+)

Answer 13

Both are true

• All neisseria are catalase (+) except N.elongata