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This glossary of biology terms is a list of definitions of fundamental terms and concepts used in biology, the study of life and of living organisms.It is intended as introductory material for novices; for more specific and technical definitions from sub-disciplines and related fields, see Glossary of cell biology, Glossary of genetics, Glossary of evolutionary biology, Glossary of ecology ...
Micrococcus spp. are obligate aerobes that inhabit human skin. Staphylococcus spp. also inhabit human skin, but they are facultative anaerobes. They ferment sugars, producing lactic acid as an end product. Many of these species produce carotenoid pigments, which color their colonies yellow or orange. Staphylococcus aureus is a major human ...
species aggregate or aggregate species: a grouping of closely related species that are treated like a single species for practical purposes; alliance: a group of species or genera that have at some time been considered provisionally related; conspecific: of the same species; e. g. of two taxa previously thought to be different species
The hierarchy of biological classification's eight major taxonomic ranks.Intermediate minor rankings are not shown. Forma specialis (plural: formae speciales), abbreviated f. sp. (plural ff. spp.) without italics, is an informal taxonomic grouping allowed by the International Code of Nomenclature for algae, fungi, and plants, [1] that is applied to a parasite (most frequently a fungus) which ...
The most commonly accepted definition is the polyphasic species definition, which takes into account both phenotypic and genetic differences. [90] However, a quicker diagnostic ad hoc threshold to separate species is less than 70% DNA–DNA hybridisation, [ 91 ] which corresponds to less than 97% 16S DNA sequence identity. [ 92 ]
Peptostreptococcus species are commensal organisms in humans, living predominantly in the mouth, skin, gastrointestinal, vagina and urinary tracts, and are members of the gut microbiota. Under immunosuppressed or traumatic conditions these organisms can become pathogenic , as well as septicemic , harming their host.
Staphylococcus includes at least 44 species. Of these, nine have two subspecies, one has three subspecies, and one has four subspecies. [5] Many species cannot cause disease and reside normally on the skin and mucous membranes of humans and other animals. Staphylococcus species have been found to be nectar-inhabiting microbes. [6]
This glossary is intended as introductory material for novices (for more specific and technical detail, see the article corresponding to each term). It has been designed as a companion to Glossary of genetics and evolutionary biology , which contains many overlapping and related terms; other related glossaries include Glossary of virology and ...