![]() ![]() This culture media is used for the enrichment and selection of Legionella spp. ![]() Bacteremia is the presence of bacteria in the bloodstream. Trichome-forming Considering the arrangement of bacteria, they may either be in pairs ( diplo ), in grape-like clusters ( staphylo ), or chains ( strepto ). Buffered Charcoal-yeast extract agar with antibiotics. This exercise will help you identify the cultural characteristics of a bacterium on an agar plate - called colony morphology. An infection that is widespread throughout the bloodstream is called sepsis. In the identification of bacteria and fungi much weight is placed on how the organism grows in or on media. A colony is defined as a visible mass of microorganisms all originating from a single mother cell, therefore a colony constitutes a clone of bacteria all genetically alike. In total, there are estimated to be millions of species of bacteria, which are diverse in shape, size and many other defining features. See variations in colonial morphology among various species of bacteria.īacteria grow on solid media as colonies. Epithelial cells, 25 microns, irregular White blood cells, 12 microns, round Red blood cells, 7 microns, round Yeast, 7 microns, ovoid Bacteria, 0.5 - 1. Bacteria are single-celled organisms that are defined as prokaryotes, these are organisms that have cells with no defined nucleus or other specialized organelles.
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