Chapter 23, Problem 60A

Interpretation Introduction

Interpretation:

The reason for the following should be explained.

The hydrolysis of cellulose, glycogen, and starch produces only one monosaccharide.

The monosaccharide which is produced should be determined.

Concept Introduction:

A biological molecule that consists of carbon, hydrogen, and oxygen is known as a saccharide or carbohydrate. The general formula of saccharide is ${{\text{(CH}}_{\text{2}}\text{O)}}_{\text{n}}$ .

Saccharides (sugar) are classified as monosaccharides, disaccharides, and polysaccharides.

Monosaccharides are defined as a simpler carbohydrate which contains one sugar molecule and can’t be hydrolyzed into smaller carbohydrate.

Disaccharides are defined as a saccharide that contains two sugar molecules, that is when two monosaccharides are linked by glycosidic bonds, it is a double ring structure.

Polysaccharides are defined as a saccharide that contains many units of sugar molecules that are more than two monosaccharides are linked by glycosidic bonds.

Answer to Problem 60A

Cellulose, glycogen, and starch are made up of glucose monomers, thus single monosaccharide is produced on hydrolysis. The monosaccharide produced is glucose.

Explanation of Solution

Starch consists of many units of monosaccharide as it is a polymeric carbohydrate that consists of glucose units linked with glycosidic bonds.

Cellulose consists of many units of monosaccharide or sugar as it is a polymeric carbohydrate that consists of various sugar units linked with glycosidic bonds.

Glycogen consists of many units of monosaccharide or sugar as it is a polymeric carbohydrate that consists of various sugar units linked with glycosidic bonds.

These are homopolymers as they are made up of the same monomer unit that is glucose. Thus, the hydrolysis of cellulose, glycogen, and starch produces only one monosaccharide, that is, glucose.

Hence, glucose is produced as a hydrolysis product of cellulose, glycogen, and starch.