isomer
Biology

isomer



Term: isomer
Literally meaning: ?equal parts?
Origin: Anc Greek
/é???/isos(=equal)
+?????/meros(=part)
Coined/History
The term coined in 1830, by Swedish chemist Jons Jacob Berzelius(1779-1848)  who wrote ?those bodies that have the same composition but different properties?. Louis Pasteur (1822-1895) in 1848 separated racemic acid into its two optically active tartaric acid components by crystallization.
Sources
J.J. Berzelius (1831) ?Über die Zusammensetzung der Weinsäure und Traubensäure (John's säure aus den Voghesen), über das Atomengewicht des Bleioxyds, nebst allgemeinen Bemerkungen über solche Körper, die gleiche Zusammensetzung, aber ungleiche Eigenschaften besitzen," Annalen der Physik und Chemie, vol. 19, pages 305?335;
Definition
Isomers are the chemical molecules that have the same molecular formula but different structural formulas (arrangements of atoms).




- Lanthanum (la)
Term: lanthanum (La)Literally meaning: ?pertaining to hidden?Origin: ???????/lanthano(= to be hidden, to escape notice) .The element called lanthanum because it is ?hidden? in rare minerals. Coined/History  Lanthanum was isolated in the mineral...

- Selenium (se)
Term: selenium (Se)Literally meaning: ?pertaining to moon?Origin: Anc Greek??????/selene(=moon) Coined/History  Selenium was named by  Swedish chemist Jons Jacob Berzelius in 1817 ((1779-1848)  when he noticed that selenium is...

- Catalysis
Term: catalysis Origin: Anc Greek       ????/cata(=prefix denoting ?down to? or ?against?)?????/lysis (=???/leo (break up, solve)  à dissolution or a riot Jöns Jacob berzelius (1779 ?1848)Coined: in 1835 by Swedish...

- Polymerase
Term: polymerase Origin:  An Greek ????/poly(=multiple) +?????/meros(part) -??? /ase(suffix ) meaning that this molecule makes multiple identical parts of a template. Coined:  in 1838 by  Swedish chemist Jons Jakob  Berzelius (1779-1848)...

- Protein
Term: proteinOrigin: Anc Greek ?????? /protos (=first or prime importance) +(feminine) -???/ine, French chemical suffix for feminine nouns used in chemistry to form endings of substances.  Coined:. by Jons Jakob Berzelius (1779-1848) a Swedish chemist...



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