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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 ...
Bulk purchasing or mass buying is the purchase of much larger quantities than the usual, for a unit price that is lower than the usual. Wholesaling is selling goods in large quantities at a low unit price to retail merchants. The wholesaler will accept a slightly lower sales price for each unit, if the retailer will agree to purchase a much ...
Also called functionalism. The Darwinian view that many or most physiological and behavioral traits of organisms are adaptations that have evolved for specific functions or for specific reasons (as opposed to being byproducts of the evolution of other traits, consequences of biological constraints, or the result of random variation). adaptive radiation The simultaneous or near-simultaneous ...
Systematics is the study of the diversification of living forms, both past and present, and the relationships among living things through time. Relationships are visualized as evolutionary trees (synonyms: phylogenetic trees, phylogenies). Phylogenies have two components: branching order (showing group relationships, graphically represented in ...
The total of interacting organisms (biocoenosis) and non-living things (biotope) in a specific environment. A branch of ecology which studies how flows of energy and matter interact with biotic elements of ecosystems. The use of mathematics, computer programs and models to understand and predict ecosystem behavior.
Organism. An organism is defined in a medical dictionary as any living thing that functions as an individual. [1] Such a definition raises more problems than it solves, not least because the concept of an individual is also difficult. Many criteria, few of them widely accepted, have been proposed to define what an organism is.
The kit comes with a generous helping of spiced, cooked and roughly shredded chicken, cheese, a fresh and crunchy slaw and tortillas. The sauces—a cilantro-lime crema and a classic salsa ...
A molecular aggregate consisting of two subunits. The term is often used to describe a protein complex composed of two proteins, either the same protein (a homodimer) or different proteins (a heterodimer); or to an individual protein composed of two polypeptides. Compare monomer, trimer, and tetramer. dinucleotide.