The bond that is formed between two monosaccharide units is called:

Explanation

Ionic bond: An ionic bond is a type of chemical bond that forms between two atoms when one atom donates an electron, becoming positively charged (cation), and the other atom accepts the electron, becoming negatively charged (anion). Ionic bonds occur between atoms with significantly different electronegativities, resulting in the transfer of electrons. Hydrogen bond: A hydrogen bond is a type of weak chemical bond that occurs between a hydrogen atom in a polar covalent bond and an electronegative atom (usually oxygen, nitrogen, or fluorine) in another molecule. Hydrogen bonding is important for the structure and properties of many molecules, but it is not the bond that forms between two monosaccharide units. Peptide bond: A peptide bond is a specific type of covalent bond that forms between the carboxyl group (COOH) of one amino acid and the amino group (NH2) of another amino acid during the formation of a protein. Peptide bonds are essential for building protein chains in a process called protein synthesis.Glycosidic bond: The correct option is glycosidic bond. A glycosidic bond is a type of covalent bond that forms between two monosaccharide units during the formation of disaccharides, oligosaccharides, and polysaccharides. It is formed when a hydroxyl group (-OH) of one monosaccharide reacts with the anomeric carbon (the carbon containing the carbonyl group) of another monosaccharide. This reaction involves the removal of a water molecule (H2O), resulting in the formation of a glycosidic linkage between the two monosaccharides.In summary, option d) Glycosidic bond is the correct option. A glycosidic bond is the covalent bond that forms between two monosaccharide units during the formation of various types of saccharides like disaccharides, oligosaccharides, and polysaccharides. The other options (a) Ionic bond, (b) Hydrogen bond, and (c) Peptide bond are different types of chemical bonds with different functions and properties.