STEC O157 strains of bovine origin (n = 102) that varied by source, and epidemiologically unrelated human clinical STEC O157 strains (n = 91) were used for polymorphism discovery (Additional data file 1) [, –]. Each strain was characterized as STEC O157 by an enzyme-linked immunosorbent assay using an O157 monoclonal antibody and multiplex PCR for stx1 , stx2…
Archaea versus Bacteria comparison chart Archaea Bacteria Ribosomes Present Introduction (from Wikipedia) The Archaea constitute a domain or kingdom of single-celled microorganisms. These microbes are prokaryotes, meaning that they have no cell nucleus or any other membrane-bound organelles in their cells. Bacteria constitute a large domain of prokaryotic microorganisms…
Naming and Classification of Fungi Introduction Although it is something that we give little thought to, the naming and classification of objects play an important role in society. Imagine the problems that we would have if we were not given names and if we did not name our cities, streets or pets. Now imagine if we did not classify the books that are in our…
The inventor of modern scientific classification was Carolus Linnaeus (1707-1778) a Swedish botanist who classified and described more than 4, 400 species of animals and 7, 700 species of plants. There are billions of different kinds of living things (or organisms) on earth. To help study them, biologists have devised ways of naming and classifying them according…
2. Enriched medium (Added growth factors): Addition of extra nutrients in the form of blood, serum, egg yolk etc, to basal medium makes them enriched media. Enriched media are used to grow nutritionally exacting (fastidious) bacteria. Blood agar, chocolate agar, Loeffler’s serum slope etc are few of the enriched media. Blood agar is prepared by adding 5-10% (by…
Bacteria can be classified on the basis of cell structure, metabolism or on differences in cell components. Learning Objective Describe how bacteria can be classified on the basis of cell structure, cellular metabolism or differences in cell components such as DNA Key Points A mesophile is an organism that grows best in moderate temperature, neither too hot nor…
