Gram Negative Cocci

Question 1

Bacteria that resembles gram negative cocci morphology

Answer 1

Moraxella catarrhalis

Question 2

Most common of all Moraxella

Answer 2

Moraxella catarrhalis

Question 3

Normal flora of the Upper Respiratory Tract (Oropharynx) that is OPPORTUNISTIC

Answer 3

Moraxella catarrhalis

Question 4

3rd most common cause of Otitis Media and Sinusitis

Answer 4

Moraxella catarrhalis

Question 5

Old name of Moraxella catarrhalis

Answer 5

Branhamella catarrhalis

Question 6

Disease caused by Moraxella catarrhalis among children

Answer 6

Otitis media
Sinusitis

Question 7

Biochemical Test for Moraxella catarrhalis

Answer 7

(+) Catalase
(+) Oxidase

Question 8

Culture used in Moraxella catarrhalis

Answer 8

Chocolate agar plate

Question 9

Appearance of Moraxella catarrhalis in chocolate agar plate

Answer 9

Pink to brown colony “Hockey puck” appearance colonies remain intact when pushed

Question 10

What laboratory test is Moraxella catarrhalis positive

Answer 10

DNase test
Butyrate Esterase test

Question 11

Laboratory test for Moraxella catarrhalis

Answer 11

CHO utilization
DNase test
Butyrate Esterase test

Question 12

Only Neisseriaceae that can lyse DNase

Answer 12

Moraxella catarrhalis

Question 13

Color of positive in Butyrate esterase

Answer 13

Blue

Question 14

Specimen of choice for Butyrate esterase

Answer 14

Eye and Ear culture

Question 15

What are the non pathogens Neisseria

Answer 15

Neisseria cinerea
Neisseria elongata
Neisseria flavescens
Neisseria lactamica
Neisseria mucosa
Neisseria polysaccharea
Neisseria sicca
Neisseria subflava

Question 16

Non pathogenic Neisseria, colony is similar to Neisseria gonorrhoeae on Chocolate Agar Plate and differentiated by Colistin

Answer 16

Neisseria cinerea

Question 17

Non pathogenic Neisseria with yellow pigment, assachrolytic and can grown on Blood Agar Plate and Chocolate Agar Plate at 22C

Answer 17

Neisseria flavescens

Question 18

Non pathogenic Neisseria that is common in nasopharynx of infants and children and Meningococcal carrier surveys - common in<2 years old and rare in children

Answer 18

Neisseria lactamica

Question 19

Non pathogenic Neisseria that is large, adherent to agar and very mucoid. It is also isolated in the airways of dolphins, nasopharynx of children and young adults

Answer 19

Neisseria mucosa

Question 20

Non pathogenic Neisseria that is Dry wrinkled, adherent and breadcrumbs like colonies on Blood Agar Plate

Answer 20

Neisseria sicca

Question 21

Non pathogenic Neisseria that is rod shape gram-cocci which is weakly positive to positive catalase test

Answer 21

Neisseria elongata

Question 22

Pathogenic Neisseria that is rod shaped gram-cocci, normal flora for DOGS, human infection after dog bite. (+) for catalase (-) acid from COH and weak (+) for Phenylalanine Deaminase Test

Answer 22

Neisseria weaveri

Question 23

Biochemical Test for Neisseria gonorrhoeae

Answer 23

Carbohydrate utilization test
Quadferm+
Oxidase test
Superoxol test
DNase test
Beta lactamase test
Chromogenic test

Question 24

Composition of Carbohydrate utilization test

Answer 24

Cystine Trypticase Agar + 1% carbohydrate

Question 25

Positive result in carbohydrate utilization test

Answer 25

Yellow color after incubation

Question 26

Composition of QUADferm

Answer 26

Glucose Maltose Lactose Sucrose

Question 27

Fermented by Neisseria gonorrhoeae

Answer 27

Glucose

Question 28

Fermented by Neisseria meningitidis and not fermented Neisseria gonorrhoeae

Answer 28

Maltose

Question 29

Used to differentiate Neisseria gonorrhoeae and Neisseria meningitis

Answer 29

QUADferm - Maltose

Question 30

Positive result in QUADferm test

Answer 30

Red to yellow color

Question 31

Test that detects cytochrome oxidase enzyme

Answer 31

Oxidase test

Question 32

Positive result in Oxidase test

Answer 32

Dark purple within 10 seconds

Question 33

Modification test

Answer 33

Superoxol test

Question 34

Reagent in Superoxol test

Answer 34

30% H2O2 (Hydrogen peroxide)

Question 35

Positive result in Superoxol test

Answer 35

Vigorous bubbling

Question 36

Test used to differentiate Moraxella catarrhalis (+) from Neisseria (-)

Answer 36

DNase test

Question 37

Positive result in DNase test

Answer 37

Clear halo around the colony

Question 38

Positive result in Beta lactamase test

Answer 38

Deep pink or red within 10 minutes

Question 39

Causes Meningitis

Answer 39

Neisseria meningitidis

Question 40

Collection of Neisseria meningitis

Answer 40

Pharyngeal swab

Question 41

Pathogen

Answer 41

Commensal and True pathogen of the upper respiratory tract

Question 42

Causative agent for

Answer 42

Meningococcemia Spotted fever

Question 43

Mode of transmission

Answer 43

Close contact (respiratory droplets)

Question 44

Culture

Answer 44

Blood agar plate Chocolate agar plate Thayer martin agar

Question 45

Major serogroups

Answer 45

A, B, C, Y & W135