Question

In a polysaccharide, the individual monosaccharides are linked by a
(A) Glycosidic bond
(B) Peptide bond
(C) Ester bond
(D) Phosphodiester bond
(E) Hydrogen bond

Answer 1

Hint : Polysaccharides are the most common kind of carbohydrate in foods. They are polymeric carbohydrates with lengthy chains made up of monosaccharide units linked together by glycosidic connections. This carbohydrate may hydrolyze (react with water) with the help of amylase enzymes, resulting in component sugars (monosaccharides, or oligosaccharides). They have a variety of structures, ranging from linear to extremely branching. Storage polysaccharides like starch, glycogen, and galactogen, as well as structural polysaccharides like cellulose and chitin, are examples.

Complete Step By Step Answer:
A glycosidic bond, also known as a glycosidic linkage, is a form of covalent connection that connects a carbohydrate (sugar) molecule to another group, which might be another carbohydrate or not. The hemiacetal or hemiketal group of a saccharide (or a molecule generated from a saccharide) forms a glycosidic link with the hydroxyl group of a chemical such as an alcohol. A glycoside is a chemical that contains a glycosidic link. The chemical ROH from which the carbohydrate residue has been removed is frequently referred to as the aglycone, while the carbohydrate residue itself is sometimes referred to as the 'glycine', especially in naturally occurring glycosides. The glycosidic oxygen that connects the glycoside to the aglycone or reducing end sugar is referred to as an O-glycosidic bond. S-glycosidic linkages (which create thioglycosides) are analogous in that the oxygen of the glycosidic bond is substituted with a sulphur atom. N-glycosidic bonds, on the other hand, have the glycosidic bond oxygen substituted with nitrogen. Glycosylamines are substances that have N-glycosidic linkages in them. The glycosidic oxygen is substituted by a carbon in C-glycosyl bonds; the name "C-glycoside" is considered a misnomer by IUPAC and is deprecated.
Hence option a is correct.

Note :
Nutrition Polysaccharides are popular energy sources. Many species can easily convert starches to glucose, but they are unable to metabolise cellulose or other polysaccharides such as chitin and arabinoxylans. Some bacteria and protists can metabolise these carbohydrate types. Microorganisms, for example, are used by ruminants and termites to break down cellulose. Despite the fact that these complex polysaccharides are difficult to digest, they supply essential nutrients to humans. Dietary fibre is a kind of carbohydrate that aids digestion among other things.