The aim of this experiment is to identify and classify of an unknown bacterial isolate. Morphological and Biological test were preformed to identifiy the isolates characteristics. The following characteristics were tested: gram-stain, motility, morphology, hemolysis, lactose fermetation, mannitol fermentation, osmotolerance, aesculin hydrolysis, starch hydrolysis, gelatine hydrolysis, amino acid decarboxylation, lipid hydrolysis, lactose fermetation, casein digestion, catalase enzyme production, cytochrome oxidase enzyme production, citrate utilization, tryptophan hydrolysis, urease enzyme production, hydrogen sulphaide production, nitrate reduction, carbohydrate fermentation, glucose utilization and non-acidic end product from glucose fermetation.
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A Taxonomist, a person who studies taxonomy, groups similar organisms together and organise these groups in a non-overlapping hierarchical arrangement.
Taxonomy consists of 3 parts
Classification
Is the arrangement of organism into groups/taxa based on evolutionary realtedness or on mutual similarities. There are 2 main types of classification:
Phenetic classification
Grouping of organisms based of similarites of their phenotypic characteristics. This system of classification compares many traits that are considered all equally important, unweighted traits. The more features two organisms share, the more likely they will be put in the same group. Taxonomists base their groupings on chemical, morphological, anatomical, physiological, and ecological characteristics (Sokal, 1986).
Phylogenetic classification
Grouping of organisms based on evolutionary relationships rather than mutual similarities or general resemblance. A century ago groupings were designed to support the Darwian principle of a common descendant. Molecular Evolution studies, which use DNA sequence analysis, are used in the 21st century to determine the phylogenetic braches of the evolutionary tree of Life, based on evolutionary characteristic traits of organisms (Bock,
A Taxonomist, a person who studies taxonomy, groups similar organisms together and organise these groups in a non-overlapping hierarchical arrangement.
Taxonomy consists of 3 parts
Classification
Is the arrangement of organism into groups/taxa based on evolutionary realtedness or on mutual similarities. There are 2 main types of classification:
Phenetic classification
Grouping of organisms based of similarites of their phenotypic characteristics. This system of classification compares many traits that are considered all equally important, unweighted traits. The more features two organisms share, the more likely they will be put in the same group. Taxonomists base their groupings on chemical, morphological, anatomical, physiological, and ecological characteristics (Sokal, 1986).
Phylogenetic classification
Grouping of organisms based on evolutionary relationships rather than mutual similarities or general resemblance. A century ago groupings were designed to support the Darwian principle of a common descendant. Molecular Evolution studies, which use DNA sequence analysis, are used in the 21st century to determine the phylogenetic braches of the evolutionary tree of Life, based on evolutionary characteristic traits of organisms (Bock,