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Deoxyribose, or more precisely 2-deoxyribose, is a monosaccharide with idealized formula H−(C=O)−(CH 2)−(CHOH) 3 −H. Its name indicates that it is a deoxy sugar, meaning that it is derived from the sugar ribose by loss of a hydroxy group. Discovered in 1929 by Phoebus Levene, [2] deoxyribose is most notable for its presence in DNA.
These specific monosaccharide names have conventional three-letter abbreviations, like "Glu" for glucose and "Thr" for threose. Generally, a monosaccharide with n asymmetrical carbons has 2 n stereoisomers. The number of open chain stereoisomers for an aldose monosaccharide is larger by one than that of a ketose monosaccharide of the same length.
Glucose is the most abundant monosaccharide. Glucose is also the most widely used aldohexose in most living organisms. One possible explanation for this is that glucose has a lower tendency than other aldohexoses to react nonspecifically with the amine groups of proteins. [64]
Because the level of circulatory glucose is largely determined by the intake of dietary carbohydrates, diet controls major aspects of metabolism via insulin. [18] In humans, insulin is made by beta cells in the pancreas , fat is stored in adipose tissue cells, and glycogen is both stored and released as needed by liver cells.
Video explanation. The three most common forms of sugar are glucose, fructose, and galactose, and these are all types of monosaccharides, meaning they’re made of just one sugar molecule, molecules like this are called carbohydrates, because they’re made up of carbon, hydrogen, and oxygen, usually with a hydrogen-oxygen ratio of 2:1. if you link two of these guys together, you get a ...
"It's better to err on the side of caution." The one exception to this rule, he said, comes to shelf life and expiration dates. These things, he said, "often measure quality, not safety."
Jennifer Aniston, 55, exercises regularly and keeps her diet in check with the 80/20 rule. The 80/20 rule involves eating healthily 80% of the time and being more lenient during the other 20%.
A heteropolysaccharide is a polymer containing more than one kind of monosaccharide residue. [3] The parent chain contains only one type of monosaccharide and should be listed last with the ending “-an”, and the other types of monosaccharides listed in alphabetical order as “glyco-” prefixes. [3]