glycogen
Biology

glycogen


Term: glycogen
Literally meaning: ?producing sweet?
Origin: Greek
?????????/glycag?no(=glycogen)
>??????/glycos(=sweet) as glycose, an older term for glucose +?????/geno (=birth to, produce) >???????/genesis(=origin) >?????/ genea(=generation
Coined/History
(?)
Glycogen is the storage form of carbohydrate for virtually every organism from yeast to primates and for mammalian tissues the major depots located in muscle and liver. The term of glycogen was coined in the 1850s by French physiologist Claude Bernard (1813 ?1878) who also defined the term ?milieu intérieur? (homeostasis). In 1855 he coined the term ?matière glycogene? ? sugar-making material. Bernard believed that glycogen is formed by proteins. In 1903 Grude proved that carbohydrates form glycogen in the artificially perfused liver and later in numerous experiments on rabbits Barrenscheen obtained formation of glycogen in the isolated liver by 2% solution of glycose. Additionally, in 1909 de Meyer proved that pancreas is necessary for glycogen formation in the liver. Von Gierke  first  described patient with glycogen storage disease  in 1929.
Definition
Glycogen is a branched polymer of glucose residues (polysaccharite) which is analogous to the starch in plants which is a single linear chain of glucose,. Glycagon can be broken down to glucose molecules when energy is needed.





- Glycogen
All lizards and other animals store glucose, and they do so by storing it in the form of glycogen. In order to release the glucose, glycogen molecules must be hydrolyzed. Glycogen is a storing polysaccharides. ...

- #113 The Control Of Blood Glucose
The blood glucose concentration is regulated by negative feedback control mechanisms. Blood glucose concentration should remain at a fairly constant value of about 100 mg glucose per 100 cm3 of blood. If blood glucose concentration falls well below...

- #9. Carbohydrates - Polysaccharides
Molecules contain hundreds/thousands of monosaccharides linked into long chains. Molecules are enormous --> the majority do not dissolve in water --> good for storing energy (starch and glycogen) or for forming strong structures (cellulose)....

- Glycogenesis
Term: glycogenesisLiterally meaning: ?process of sugar production ?Origin: Anc Greek??????/glycos(=sweet) as glycose, an older term for glucose,+???????/genesis(=origin) >?????/ genea(=generation) > ?????/geno (=birth to, produce)Coined/History(?)Glycogen...

- Comparison Between Starch, Glycogen And Cellulose
Comparison between Starch, Glycogen and Cellulose Characters Starch Glycogen Cellulose Monomer a-glucose a-glucose b-glucose Type of bond between monomers 1,4 glycosidic bond (amylose) + 1,4 and 1,6 glycosidic bond (amylopectin) 1,4 and...



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