[bahy-oh-sin-thuh-sis] /ˌbaɪ oʊˈsɪn θə sɪs/
noun, Biochemistry
the formation of chemical compounds by a living organism.
the laboratory preparation of biological molecules by the use of reagents or catalysts derived from natural substances and modeled on a series of reactions occurring in a living organism.
1925–30; bio- + synthesis
Example Sentences for biosynthesis
Convergent evolution in biosynthesis of cyanogenic defence compounds in plants and insects.
British Dictionary definitions for biosynthesis
biosynthesis (ˌbaɪəʊˈsɪnθɪsɪs)
the formation of complex compounds from simple substances by living organisms

Collins English Dictionary - Complete & Unabridged 10th Edition
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biosynthesis in Medicine

biosynthesis bi·o·syn·the·sis (bī'ō-sĭn'thĭ-sĭs)
Formation of a chemical compound by a living organism. Also called biogenesis.

bi'o·syn·thet'ic (-thět'ĭk) adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Encyclopedia Article for biosynthesis

the sequences of enzyme-catalyzed reactions by which relatively complex molecules are formed in living cells from nutrients with relatively simple structures. Anabolic processes, which include the synthesis of such cell components as carbohydrates, proteins, and lipids, require energy in the form of energy-rich compounds (e.g., adenosine triphosphate) that are produced during breakdown processes (see catabolism). In growing cells, anabolic processes dominate over catabolic ones; in nongrowing cells, a balance exists between the two

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Tile value for biosynthesis

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