STAPHYLOCOCCUS AUREUS
Written by Dr.ChrisSTAPHYLOCOCCUS AUREUS (Staphylococcus pyogenes):
Morphology: It is ovoid or spherical, (0.8 to 0.9,u) non motile, non capsulated, non sporing strain with ordinary aniline dye and is Gram positive. It is arranged in cluster (grape like). Cluster formation is due to cell division occurring in three planes with daughter cells tending to remain in close proximity.
Cultural characteristics: […]
Tags: Actinomycetes, corynebacteria, Mycoplasma, Spirochaetes, Vibrio
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TYPES OF FIMBRIAE
Written by Dr.ChrisFIMBRIAE: Fimbriae (fringes) are filamentous short, thin, straight, hair like appendage 0.1 to 1.5 p long and less than 4 to 8 nm thick. They are also called pilli (hair). They project from cell surface, as straight filaments. They are best developed in freshly isolated strains and in liquid culture. They tend to disappear following […]
Tags: Actinomycetes, corynebacteria, Mycoplasma, Spirochaetes, Vibrio
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Size of Bacteria
Written by Dr.ChrisBacteria are unicellular free living organisms without chlorophyll having both DNA and RNA. They are capable of performing all essential processes of life e.g., growth, metabolism and reproduction. They have rigid cell wall containing muramic acid. They were originally classified under plant and animal kingdoms. This being unsatisfactory a third kingdom “PROTISTA” was formed for […]
Tags: Actinomycetes, corynebacteria, Mycoplasma, Spirochaetes, Vibrio
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