microbio: neisseria and moraxella catarrhalis

gram negative cocci

all neisseria and moraxella catarrhalis are ___ positive

oxidase

what does a positive oxidase test look like

blue color change

N. gonorrhoeae can only ferment ___

glucose

a positive result on the carbohydrate utilzation test is

yellow

a nitrate test on N. gonorrhoeae will result in a ___ result

negative

fimbriae are important in

attachment to host tissue

T1 and T2:

are virulent (have pili)

T3-T5:

are avirulent (do not have pili)

n. gonorrhoeae colony morphology

small, gray, translucent, ‘sticky’

n. gonorrhoeae produces a ___ catalase test

positive

why cant blood cultures be used to cultivate n. gonorrhoeae

the SPS present in the broth is toxic to the organism

the NAAT test is specific for

n. gonorrhoeae

n. meningitidis microscopic morphology

kidney/bean shaped diplococci

which sugars does n. meningitidis ferment

glucose and maltose

which organism has a carrier state and is most common in college dorms or military camps

n. meningitidis

which organism can cause waterhouse-friderichsen syndrome

n. meningitidis

which organism is the only neisseria that is beta-galactosidase positive

n. lactamina

which organism is characterized for the ‘hockey puck’ movement

moraxella catarrhalis

which characteristics do most neisseria species have

oxidase-positive, gram-negative diplococci

which virulence factor of the pathogenic neisseria spp. is responsible for the initial attachment of the organism to host tissues

pili

which selective medium allows the isolation of N. gonorrhoeae and N. meningitidis

modified thayer-martin (MTM) agar

which test can be used for definitive identification of both n. gonorrhoeae and n. meningitidis

rapid carbohydrate utilization

which opportunistic pathogen is asaccharolytic, tributyrin hydrolysis positive, and DNase positive?

moraxella catarrhalis

which organism is an opportunistic pathogen associated with otitis media and sinusitis in children

moraxella catarrhalis

erythromycin eye drops are placed into the eyes of newborns to prevent infections caused by

neisseria gonorrhoeae