In biology, taxonomy (from Ancient Greek τάξις () 'arrangement', and -νομία () 'method') is the scientific study of naming, defining (circumscribing) and classifying groups of biological organisms based on shared characteristics. Organisms are grouped into taxa (singular: taxon) and these groups are given a taxonomic rank; groups of a given rank can be aggregated to form a more ...

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Formal theory. Formally, a string is a finite, ordered sequence of characters such as letters, digits or spaces. The empty string is the special case where the sequence has length zero, so there are no symbols in the string.

Oct 04, 2019 · Related Biology Terms. Prokaryote – An organism that has a simple prokaryotic cell; bacteria and archaea are prokaryotes. Binary fission – The method by which bacteria reproduce asexually through dividing. Probiotic – A bacterium that helps maintain a healthy digestive tract when consumed.

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Chromatography is a group of techniques, including paper chromatography, that are used to separate the various components in a complex mixture or solution.In each chromatography apparatus there is generally a mobile phase, which is a fluid that runs along the stationary phase, and a stationary phase, that stays stationary while the mobile phase moves through.

Oct 27, 2020 · Tryptophan is a precursor molecule of niacin (vitamin B 3), melatonin and serotonin and thus essential for sleep and mood.As with all amino acids, the tryptophan codon is a building block for polypeptide chains and proteins. Lack of tryptophan is often experienced as an inability to sleep and a depressive mood.

TERMIUM Plus ®, one of the largest terminology and linguistic data banks in the world, gives you access to millions of terms in English, French, Spanish and Portuguese.You can find terms, abbreviations, definitions and usage examples in a wide range of specialized fields. The data bank is an essential tool for understanding an acronym, checking an official title, finding an …

The following outline is provided as an overview of and topical guide to zoology: . Zoology – study of animals.Zoology, or "animal biology", is the branch of biology that relates to the animal kingdom, including the identification, structure, embryology, evolution, classification, habits, and distribution of all animals, both living and extinct, and how they interact with their ecosystems.

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