Monosaccharides such as glucose can be linked together in condensation reactions. For example, sucrose (table sugar) is formed from one molecule of glucose and one of fructose, as shown below. Molecules composed of two monosaccharides are called disaccharides.
Likewise, people ask, are monosaccharides macromolecules?
Carbohydrate Molecules. Carbohydrates are essential macromolecules that are classified into three subtypes: monosaccharides, disaccharides, and polysaccharides.
People also ask, how is galactose formed?
Galactose is a monosaccharide. When combined with glucose (monosaccharide), through a condensation reaction, the result is a disaccharide called lactose. The hydrolysis of lactose to glucose and galactose is catalyzed by the enzymes lactase and β-galactosidase.
How monosaccharides are formed?
Monosaccharides are simple sugars made up of three to seven carbons, and they can exist as a linear chain or as ring-shaped molecules. … Disaccharides form when two monosaccharides undergo a dehydration reaction (a condensation reaction); they are held together by a covalent bond.
What are monosaccharides in chemistry?
monosaccharide, also called simple sugar, any of the basic compounds that serve as the building blocks of carbohydrates. … The carbonyl group combines in aqueous solution with one hydroxyl group to form a cyclic compound (hemi-acetal or hemi-ketal). The resulting monosaccharide is a crystalline water-soluble solid.
What are the monosaccharides that make up maltose?
In maltose, two glucose units make up the compound. In lactose and sucrose though, there is only one glucose unit that combines with another monosaccharide – a galactose and a fructose, respectively. In maltose, α-(1,4) glycosidic bond joins the two sugars, i.e. between Carbon-1 and Carbon-4.