Chapter 23, Problem 52A

Interpretation Introduction

(a)

Interpretation:

Starch should be classified as monosaccharides, disaccharides or polysaccharides.

Concept introduction:

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

Saccharides are classified as: monosaccharides, disaccharides and polysaccharides.

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

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

Answer to Problem 52A

Starch is classified as polysaccharide.

Explanation of Solution

The given molecule is starch.

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

Thus, starch is classified as polysaccharide.

Interpretation Introduction

(b)

Interpretation:

Glucose should be classified as monosaccharides, disaccharides or polysaccharides.

Concept introduction:

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

Saccharides are classified as: monosaccharides, disaccharides and polysaccharides.

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

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

Answer to Problem 52A

Glucose is classified as monosaccharide.

Explanation of Solution

The given molecule is glucose.

Glucose consists of single unit of sugar which can’t be hydrolysed into simpler molecule. Glucose is obtained by the photosynthesis process and also found in plants.

The structure is:

Thus, glucose is classified as monosaccharide.

Interpretation Introduction

(c)

Interpretation:

Sucrose should be classified as monosaccharides, disaccharides or polysaccharides.

Concept introduction:

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

Saccharides are classified as: monosaccharides, disaccharides and polysaccharides.

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

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

Answer to Problem 52A

Sucrose is classified as disaccharide.

Explanation of Solution

The given molecule is sucrose.

Sucrose consists of two units of monosaccharide. One fructose unit and glucose unit combined with each other by glycosidic bond to form sucrose.

The structure is:

Thus, sucrose is classified as disaccharide.

Interpretation Introduction

(d)

Interpretation:

Ribose should be classified as monosaccharides, disaccharides or polysaccharides.

Concept introduction:

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

Saccharides are classified as: monosaccharides, disaccharides and polysaccharides.

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

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

Answer to Problem 52A

Ribose is classified as monosaccharide.

Explanation of Solution

The given molecule is ribose.

Ribose consists of single unit of sugar which can’t be hydrolysed into simpler molecule. Ribose consists of an aldehyde functional group at one end of the chain structure.

The structure is:

Thus, ribose is classified as monosaccharide.

Interpretation Introduction

(e)

Interpretation:

Cellulose should be classified as monosaccharides, disaccharides or polysaccharides.

Concept introduction:

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

Saccharides are classified as: monosaccharides, disaccharides and polysaccharides.

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

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

Answer to Problem 52A

Cellulose is classified as polysaccharide.

Explanation of Solution

The given molecule is cellulose.

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

Thus, cellulose is classified as polysaccharide.

Interpretation Introduction

(f)

Interpretation:

Glycogen should be classified as monosaccharides, disaccharides or polysaccharides.

Concept introduction:

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

Saccharides are classified as: monosaccharides, disaccharides and polysaccharides.

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

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

Answer to Problem 52A

Glycogen is classified as polysaccharide.

Explanation of Solution

The given molecule is glycogen.

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

Thus, glycogen is classified as polysaccharide.

Interpretation Introduction

(g)

Interpretation:

Fructose should be classified as monosaccharides, disaccharides or polysaccharides.

Concept introduction:

A biological molecule which consists of carbon, hydrogen and oxygen is known as saccharide or carbohydrate. The general formula of saccharide is

${{\text{(CH}}_{\text{2}}\text{O)}}_{\text{n}}$.

Saccharides are classified as: monosaccharides, disaccharides and polysaccharides.

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

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

Answer to Problem 52A

Fructose is classified as monosaccharide.

Explanation of Solution

The given molecule is fructose.

Fructose consists of single unit of sugar which can’t be hydrolysed into simpler molecule.

The structure is:

Thus, fructose is classified as monosaccharide.

Interpretation Introduction

(h)

Interpretation:

Lactose should be classified as monosaccharides, disaccharides or polysaccharides.

Concept introduction:

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

Saccharides are classified as: monosaccharides, disaccharides and polysaccharides.

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

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

Answer to Problem 52A

Lactose is classified as disaccharide.

Explanation of Solution

The given molecule is lactose.

Lactose consists of two units of monosaccharide or sugar. One galactose unit and glucose unit combined with each other by glycosidic bond to form sucrose.

The structure is:

Thus, lactose is classified as disaccharide.