Is Moraxella a Diplococci?
NATURE. Moraxella spp. are Gram-negative diplococci that morphologically and phenotypically resemble Neisseria spp. They are strictly aerobic, oxidase-positive, catalase-positive, DNAse-positive and asaccharolytic.
Is Staphylococcus aureus a Diplococci?
Diplococci are pairs of cocci (e.g. Streptococcus pneumoniae and Neisseria gonorrhoeae) Streptococci are chains of cocci (e.g. Streptococcus pyogenes). Staphylococci are irregular (grape-like) clusters of cocci (e.g. Staphylococcus aureus).
How can you tell the difference between Moraxella and Neisseria?
The key difference between Neisseria and Moraxella is that Neisseria is a genus that belongs to the class of beta proteobacteria while Moraxella is a genus that belongs to the class of gamma proteobacteria. Proteobacteria is a major phylum comprised of gram-negative bacteria.
Is Moraxella gram positive?
Members of the genus Moraxella are Gram-negative, aerobic, asaccharolytic bacteria that can be pleomorphic, resistant to Gram-stain decolorization, and occur predominantly in pairs or short chains.
Is Neisseria DNase positive?
DNase Reactions of Neisseria and Related Species. The control cupule containing no carbohydrate remains red (no acid has been produced). Cupules with contents that are more yellow than the contents in the control cupule are recorded as positive.
Is diplococci gram-positive?
Examples of gram-positive, diplococci pathogens include Streptococcus pneumoniae and some species in Enterococcus bacteria. Streptococcus pneumoniae infects the human anatomy in the respiratory tract and the immune system.
What does Gram-negative diplococci mean?
Gonorrhea infection is a common STI caused by Neisseria gonorrhoeae, a gram-negative diplococcus bacterium that is closely related to other human Neisseria species. Men typically present with a urethral discharge; women are often asymptomatic, but may have vaginal discharge.
What is intracellular gram-negative diplococci?
Neisseria gonorrhoeae is a Gram negative, coffee-bean shaped intracellular diplococcus bacterium responsible for gonorrhoea which is one of the classical sexually transmitted infections (STIs) . The causative organism is highly adapted to the genital tract and often causing asymptomatic and undetected infection .
What is gram-positive diplococci?
Streptococcus pneumoniae is a gram-positive, encapsulated, lancet-shaped diplococci, most commonly causing otitis media, pneumonia, sinusitis, and meningitis. Streptococcus viridans consist of Strep.
What is only gram-positive diplococci?
Examples of gram-positive diplococci are Streptococcus pneumoniae and Enterococcus spp. Presumably, diplococcus has been implicated in encephalitis lethargica.