Monosaccharides (mono- = “one”; sacchar- = “sweet”) are straightforward sugars. In monosaccharides, the number of carbons usually varieties from three to seven. If the sugar has an aldehyde team (the functional team with the structure R-CHO), it is recognized as one aldose, and also if it has a ketone team (the functional team with the framework RC(=O)R’), that is recognized as a ketose. Depending upon the variety of carbons in the sugar, they also may be known as trioses (three carbons), pentoses (five carbons), and or hexoses (six carbons). Monosaccharides deserve to exist as a direct chain or together ring-shaped molecules; in aqueous remedies they space usually uncovered in ring forms.
You are watching: What kind of molecule is formed when glucose and fructose are combined
Disaccharides (di- = “two”) form when two monosaccharides undergo a dehydration reaction (also known as a condensation reaction or dehydration synthesis). Throughout this process, the hydroxyl team of one monosaccharide combines through the hydrogen of an additional monosaccharide, publication a molecule of water and forming a covalent bond. A covalent shortcut formed in between a carbohydrate molecule and also another molecule (in this case, between two monosaccharides) is known as a glycosidic bond. Glycosidic bonds (also referred to as glycosidic linkages) deserve to be that the alpha or the beta type.