Definition:A carbohydrateis a simple sugar, a modified sugar, or a polymer of a sugar.Thus, in order to understand carbohydrates it is necessary to understand sugars.*2
Description of a simple sugarA simplesugarconsists of a chain (usually unbranched with 3 - 7 carbon atoms), with the following characteristics:1.One of the carbon atoms occurs as an aldehyde or else a ketone functional group.2.Each of the other carbon atoms occurs as an alcohol functional group3.Hydrogen atoms are attached to all other positions on the carbon atoms in order to satisfy their covalencies.*3
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