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Elsevier Bacteriology (RVSP) > 11. Family Neisseriaceae > Flashcards

11. Family Neisseriaceae Flashcards

1
Q

Microscopic appearance of the family Neisseriaceae

A

Gram-negative diplococci

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2
Q

Oxidase reaction of the family Neisseriaceae

A

Oxidase positive

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3
Q

Catalase reaction of the family Neisseriaceae

A

Catalase positive (most)

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4
Q

Neisseria spp. that is catalase negative

A

Neisseria elongate

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5
Q

MOT of N. gonorrhoeae

A

Sexually transmitted

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6
Q

Presentation of gonorrhoea in males

A

Acute urethritis with dysuria and urethral discharge

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7
Q

Presentation of gonorrhoea in females

A 
Colonizes the endocervix causing:
Vaginal discharge
Dysuria
Abdominal pain
May lead to pelvic inflammatory disease
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8
Q

Selective media for Neisseria gonorrhoea

A

Modified Thayer-Martin

Chocolate agar

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9
Q

Incubation requirements of N. gonorrhoea

A

3-7% CO2
35-37°C

(Humidity important)

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10
Q

Microscopic appearance of N. gonorrhoea

A

Gram-negative diplococci (some may appear as tetrads)

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11
Q

Colony morphology of N. gonorrhoea on Chocolate agar

A

Small
Gray
Translucent
Raised colonies

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12
Q

Colony morphology of N. gonorrhoea on blood agar

A

N. gonorrhoea does not grow on blood agar

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13
Q

Catalase reaction of N. gonorrhoea

A

Catalase positive

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14
Q

Oxidase reaction of N. gonorrhoea

A

Oxidase positive

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15
Q

Carbohydrate oxidized by N. gonorrhoea

A

Glucose

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16
Q

Agar used to determine the sugar oxidized by N. gonorrhoea

A

Cystine Trypticase agar (CTA)

17
Q

Specimens for N. meningitidis diagnosis

A

CSF
Blood
Skin scraping

18
Q

Most important strains of N. meningitidis clinically

A 
A
B
C
Y
W135
19
Q

Amount of CSF needed for diagnosis of N. meningitidis infection

A

Greater than 1 mL CSF

20
Q

Yes/No. Can the CSF specimen for N. meningitidis diagnosis be refrigerated?

A

No

21
Q

Microscopic characteristics of N. meningitidis

A

Gram-negative diplococci found intracellularly and extracellularly

22
Q

Media used to grow N. meningitidis

A

Sheep blood agar
Chocolate agar
Thayer-Martin agar

23
Q

Catalase reaction of N. meningitidis

A

Catalase positive

24
Q

Oxidase reaction of N. meningitidis

A

Oxidase positive

25
Q

Carbohydrates oxidized by N. meningitidis on CTA

A

Glucose

Maltose

26
Q

Emumerate other nonpathogenic Neisseria spp.

A

N. lactamica
N. flavescens
N. sicca

27
Q

Oxygen requirements of the family Neisseriaceae

A

Aerobic

Elsevier Bacteriology (RVSP) (34 decks)

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