DIFFERENT KINDS OF BACTERIA AND THEIR GRAM-STAIN

COCCI
Gram-positive anaerobic cocci (GPAC) are a heterogeneous group of organisms defined by their morphological appearance and their inability to grow in the presence of oxygen; most clinical isolates are identified to species in the genus Peptostreptococcus.

 

BACILLUS

Gram-positive, rod-shaped (bacillus), bacteria and a member of the phylum Firmicutes. Bacillus species can be obligate aerobes (oxygen reliant), or facultative anaerobes (having the ability to be aerobic or anaerobic). They will test positive for the enzyme catalase when there has been oxygen used or present.

 SPIRILLUM

Gram-negative bacteria (family Spirillaceae).There are two species, Spirillum volutans and Spirillum winogradskyi.The taxonomic position of Spirillum minus and Spirillum pulli is uncertain. Spirillum minus is associated with rat-bite fever, and Borrelia burgdorferi with Lyme disease

 

VIBROUS

Gram-negative bacteria possessing a curved rod shape (comma shape), several species of which can cause foodborne infection, usually associated with eating undercooked seafood. Typically found in saltwater, Vibrio spp. are facultative anaerobes that test positive for oxidase and do not form spores.

SPIROCHAETE 
Spirochates (singular Spirochaete) are long helically coiled bacterium. They are not classified as gram-positive and gram-negative bacteria. Spirochaetes are distinguished from other bacterial phyla by the location of their flagella, sometimes called axial filaments, which run lengthwise between the bacterial inner membrane and outer membrane in periplasmic space. These cause a twisting motion which allows the spirochaete to move about. When reproducing, a spirochaete will undergo asexual transverse binary fission.