17 Questions
What is the presumptive test for Neisseria?
1% tetramethyl-p-phenylenediamine dihydrochloride
Which organism is inhibits by vancomycin?
Gram-positive organisms
Which agar is formerly known as Neisseria catharralis or Branhamella catharralis?
Martin Lewis Agar
What does a positive oxidase test indicate?
Dark purple colonies within 10 seconds
Which test is used to differentiate Neisseria species and Moraxella catharralis?
Oxidase test
What is the purpose of Thayer-Martin Medium in microbiology?
Inhibition of gram-negative rods
Which organism displays a wagon-wheel appearance on CAP agar?
Moraxella catharralis
What is the only organism that is positive on the DNAse test?
Moraxella catharralis
Which organism is positive for vigorous bubbling in the Superoxol test?
N.gonorrhoeae
Which organisms are negative for reduction of nitrite?
Neisseria meningitidis and N.gonorrhoeae
Which organism is exclusively positive for glucose in all the tests conducted?
N.gonorrhoeae
Which condition is characterized by recurrent episodes of meningococcemia, petechiae formation, and arthritis?
Chronic meningococcemia
What is a distinguishing feature of Neisseria cinerea compared to N. gonorrhoeae?
Positive for the DNAse test
In which condition is there severe bleeding in the adrenal glands, leading to a very poor prognosis?
Friedrichsen Syndrome
What is the primary function of Endotoxin in the context of meningococcemia?
Causes the formation of hemorrhagic rash
Which Neisseria species is considered normal microbiota in the respiratory tract, particularly in the pharynx?
N. mucosa
What characteristic feature allows differentiation between N. cinerea and other Neisseria species?
Positive for Hydroxyprolyl aminopeptidase reaction
This quiz focuses on bacterial identification tests such as sugar fermentation, DNAse test, and Superoxol test. Learn about the characteristic features and differences in testing between Moraxella catharralis, Neisseria gonorrhoeae, and Neisseria Meningitidis.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
