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Microbiology

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Gram Negative Cocci

Question
12 out of 22
 

A 33-year-old sexually active woman, a week after her menstrual period, develops a painful, swollen right knee. The most likely causative organism has which of the following characteristics?



A Both hyphae and spores

B Can live within neutrophils

C Cannot make ATP

D No true cell wall

Ans. B Can live within neutrophils

This is the history of septic arthritis due to N. gonorrhoeae. This organism can live within neutrophils.

Gonococcal infections can disseminate through blood and can cause septic arthritis.

Gonococcus is a gram negative diplococcus, catalase and oxidase positive, fermenting only glucose.

Differentiation between Meningococci and gonococci.

Characteristic

Meningococci

Gonococci

Glucose fermentation

+

+

Capsule

+

-

Anaerobic growth

-

+

Maltose fermentation

+

-

Pili

+

+

Plasmids

-

+

Shape

Pneumococci Lan ceolate/Flame / Shaped / Lens shaped

Kidney shaped

Gram Negative Cocci Flashcard List

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