0

Biomolecules

Description: This test contains 25 multiple choice questions on biomolecules.
Number of Questions: 25
Created by:
Tags: proteins fats carbohydrates etc. Carbohydrates Biomolecules
Attempted 0/25 Correct 0 Score 0

The simplest sugars which can not be further hydrolyzed are

  1. Mono saccharides

  2. Di-saccharides

  3. Oligosaccharides

  4. Poly-saccharides


Correct Option: A
Explanation:

They are simplest sugars which can not be further hydrolyzed. For example, Glucose, galactose, mannose.

Glucose, galactose, mannose come in the category of:

  1. Oligosaccharides

  2. Mono saccharides

  3. Polysaccharides

  4. Di-saccharides


Correct Option: B
Explanation:

They are the simplest sugars which can not be further hydrolyzed, e.g., glucose, galactose, mannose.

Which among the following is sweet to taste and known as Non-sugars?

  1. Mono saccharides

  2. Oligosaccharides

  3. Polysaccharides

  4. Di-saccharides


Correct Option: D
Explanation:

Di-saccharides are carbohydrates that are created when two monosaccharides are joined. The creation of a di-saccharide involves the union of two monosaccharides that undergo a process in which a water molecule is removed as part of the union. Like the two monosaccharides that combine to form the single di-saccharide, the carbohydrate is sweet to the taste and tends to dissolve in water with relative ease.

______ sugars are further classified in Di, Tri, Tetra. depending on the number of hydrolytic products formed.

  1. Mono saccharides

  2. Poly-saccharides

  3. Oligo-saccharides

  4. Di-saccharides


Correct Option: C
Explanation:

These compounds on hydrolysis yield 2 to 10 mono saccharides . Depending on the number of hydrolytic products formed,  the oligo saccharides are further divided in to Di, Tri, Tetra. etc., e.g., lactose(glucose+galactose), sucrose(glucose+fructose).

Hydrolysis of which of the following sugars gives 2 to 10 mono saccharides?

  1. mono saccharides

  2. polysaccharides

  3. di-saccharides

  4. oligo-saccharides


Correct Option: D
Explanation:

These compounds on hydrolysis yield 2 to 10 mono saccharides . Depending on the number of hydrolytic products formed, the oligo saccharides are further divided in to Di, Tri, Tetra. etc., e.g.,lactose(glucose+galactose), sucrose(glucose+fructose).

Fructose is known as fruit sugar and is found in many foods. It is an example of:

  1. Mono saccharides

  2. Poly-saccharides

  3. Oligo-saccharides

  4. Di-saccharides


Correct Option: A
Explanation:

Examples of monosaccharide units are glucose, galactose, fructose.

Sucrose is a common table sugar. It belongs to

  1. oligo-saccharides

  2. Mono saccharides

  3. Poly-saccharides

  4. Di-saccharides


Correct Option: A
Explanation:

These compunds on hydrolysis yield 2 to 10 mono saccharides . Depending on the number of hydrolytic products formed, the oligo saccharides are further divided in to Di, Tri, Tetra. etc..,e. g. lactose (glucose+galactose), sucrose (glucose+fructose).

The noncrystalline, insoluble in water and tasteless sugars are:

  1. oligo-saccharides

  2. mono-saccharides

  3. di-saccharides

  4. Polysaccharides


Correct Option: D
Explanation:

They are also known as Non -sugars since, they are noncrystalline, insoluble in water, and are tasteless. Polysaccharides are defined as the carbohydrates which on hydrolysis yield more than 10 monosaccharide units . Poly-saccharides have general formula Cx(H2O)y , which is also represented as (C6H10O5)n where n ranges from 40-3000

The sugar insoluble in water is:

  1. Mono-saccharides

  2. Oligo-saccharides

  3. Poly-saccharides

  4. Di-saccharides


Correct Option: C
Explanation:

They are also known as Non -sugars since, they are non-crystalline, insoluble in water, and are tasteless. Poly-saccharides are defined as the carbohydrates which on hydrolysis yield more than 10 monosaccharide units . Poly-saccharides have general formula Cx(H2O)y , which is also represented as (C6H10O5)n where n ranges from 40-3000

Which of the following is a non-crystalline sugar?

  1. Mono-saccharides

  2. Oligo-saccharides

  3. Di-saccharides

  4. Sugar + glucose syrup


Correct Option: D
Explanation:

 Noncrystalline sugar is made from crystalline sugar (i.e., granules) and glucose syrup by heating an undissolved mixture of undiluted crystallized sugar and liquid glucose.
 

The sugars like xylose and ribose are colorless, water-soluble and crystalline solids. They are categorised as:

  1. Mono-saccharides

  2. Oligo-saccharides

  3. Poly-saccharides

  4. di-isaccharides


Correct Option: A
Explanation:

Mono-saccharides are the most basic units of biologically important carbohydrates. They are the simplest form of sugar and are usually colourless, water-soluble, crystalline solids. Some mono-saccharides have a sweet taste. Examples of mono-saccharides include glucose (dextrose), fructose (levulose), galactose, xylose and ribose.

The tasteless sugars are

  1. Mono-saccharides

  2. Poly-saccharides

  3. Oligo-saccharides

  4. Di-saccharides


Correct Option: B
Explanation:

They are also known as Non-sugars since they are non-crystalline, insoluble in water, and are tasteless. Poly-saccharides are defined as the carbohydrates which on hydrolysis yields more than 10 monosaccharide units . Polysaccharides have general formula Cx(H2O)y , which is also represented as (C6H10O5)n where n ranges from40-3000.

 

The building blocks of di-saccharides (sucrose) and poly-saccharides are

  1. oligo-saccharides

  2. Mono-saccharides

  3. Poly-saccharides

  4. Di-saccharides


Correct Option: B
Explanation:

Mono-saccharides are the most basic units of biologically important carbohydrates. They are the simplest form of sugar and are usually colorless, water-soluble, crystalline solids. Some mono-saccharides have a sweet taste. Mono-saccharides are the building blocks of di-saccharides such as sucrose and poly-saccharides.

Which of the following is simplest form of sugar and are usually colorless, water-soluble, crystalline solids?

  1. Oligosaccharides

  2. Poly-saccharides

  3. Mono saccharides

  4. Di-saccharides


Correct Option: C
Explanation:

Monosaccharides  are the most basic units of biologically important carbohydrates. They are the simplest form of sugar and are usually colorless, water-soluble, crystalline solids.

Which of the following sugars is tasteless?

  1. Oligosaccharides

  2. Mono saccharides

  3. Disaccharides

  4. Polysaccharides


Correct Option: D
Explanation:

They are also known as Non sugars since, they are noncrystalline, Insoluble in water, and are tasteless. Polysaccharides are defined as the carbohydrates which on hydrolysis yields more than 10 monosaccharide units upon there hydrolysis. Polysaccharides have general formula Cx(H2O)y , which is also represented as (C6H10O5)n where n ranges from40-3000.

The union of two mono-saccharides forms ______ with the removal of water.

  1. mono-saccharides

  2. di-saccharides

  3. oligo-saccharides

  4. polysaccharides


Correct Option: B
Explanation:

They are carbohydrates that are created when two mono-saccharides are joined. The creation of a di-saccharide involves the union of two mono-saccharides that undergo a process in which a water molecule is removed as part of the union. Like the two mono-saccharides that combine to form the single di-saccharide, the carbohydrate is sweet in taste and tends to dissolve in water with relative ease.

The condensation reaction is concerned with the synthesis of _______ with the removal of water molecule.

  1. mono-saccharides

  2. poly-saccharides

  3. oligo-saccharides

  4. di-saccharides


Correct Option: D
Explanation:

Di-saccharides are carbohydrates that are created when two mono-saccharides are joined. The creation of a di-saccharide involves the union of two mono-saccharides that undergo a process in which a water molecule is removed as part of the union. Like the two mono-saccharides that combine to form a single di-saccharide. The carbohydrate is sweet in taste and tends to dissolve in water with relative ease. The process whereby di-saccharides are created is known as dehydration synthesis or condensation reaction.

Dehydration synthesis is the process of formation of

  1. di-saccharides

  2. mono-saccharides

  3. poly-saccharides

  4. Oligo-saccharides


Correct Option: A
Explanation:

Di-saccharides are carbohydrates that are created when two mono-saccharides are joined. The creation of a di-saccharide involves the union of two mono-saccharides that undergo a process in which a water molecule is removed as part of the union. Like the two mono-saccharides that combine to form the single di-saccharide, the carbohydrate is sweet in  taste and tends to dissolve in water with relative ease. The process whereby di-saccharides are created is known as dehydration synthesis or condensation reaction.

The sugar that gives more than ten monosaccharide units on hydrolysis is:

  1. Oligo-saccharides

  2. Mono-saccharides

  3. Poly-saccharides

  4. Di-saccharides


Correct Option: C
Explanation:

They are also known as Non-sugars since they are non-crystalline, i-nsoluble in water, and are tasteless. Polysaccharides are defined as the carbohydrates which on hydrolysis yields more than 10 monosaccharide units . Poly-saccharides have general formula Cx(H2O)y , which is also represented as (C6H10O5)n where n ranges from40-3000.

Biose is the other name for:

  1. Mono-saccharides

  2. Oligo-saccharides

  3. Di-saccharide

  4. Poly-saccharides


Correct Option: C
Explanation:

A di-saccharide or biose is the carbohydrate formed when two mono-saccharides undergo a condensation reaction which involves the elimination of a small molecule, such as water, from the functional groups only. Like mono-saccharides, di-saccharides also dissolve in water, taste sweet and are called sugars.

Cellobiose and maltose are classified as the reducing ________.

  1. Mono saccharides

  2. di-saccharides

  3. oligo-saccharides

  4. Poly saccharides


Correct Option: B
Explanation:

There are two different types of di-saccharides: reducing di-saccharides, in which one mono saccharide, the reducing sugar, still has a free hemiacetal unit; and non-reducing di-saccharides, in which the components bond through an acetal linkage between their anomeric centers and neither mono saccharide has a free hemiacetal unit. Cellobiose and maltose are the examples of reducing di-saccharides.

Sucrose and trehalose are categorised as the non-reducing _______.

  1. mono saccharides

  2. Oligo-saccharides

  3. Poly saccharides

  4. di-saccharides


Correct Option: D
Explanation:

There are two different types of di-saccharides: reducing di-saccharides, in which one mono saccharide, the reducing sugar, still has a free hemiacetal unit; and non-reducing di-saccharides, in which the components bond through an acetal linkage between their anomeric centers and neither mono saccharide has a free hemiacetal unit. Cellobiose and maltose are examples of reducing di-saccharides. Sucrose and Trehalose are examples of non-reducing di-saccharides.

Nijerose and kojibiose are

  1. mono saccharides

  2. poly saccharides

  3. di-saccharides

  4. oligo saccharides


Correct Option: C
Explanation:

di-saccharides are formed when two mono saccharides are joined together and a molecule of water is removed. For example; milk sugar (lactose) is made from glucose and galactose whereas the sugar from sugar cane and sugar beets (sucrose) is made from glucose and fructose. The two mono saccharides are bonded via a dehydration reaction (also called a condensation reaction or dehydration synthesis) that leads to the loss of a molecule of water and formation of a glycosidic bond.Nijerose & kojibiose are less common di-saccharides.

The two mono saccharides undergoes dehydration reaction to form

  1. di-saccharides

  2. Poly saccharides

  3. Mono saccharides

  4. Oligo-saccharides


Correct Option: A
Explanation:

Di-saccharides are formed when two mono saccharides are joined together and a molecule of water is removed. For example; milk sugar (lactose) is made from glucose and galactose whereas the sugar from sugar cane and sugar beets (sucrose) is made from glucose and fructose. The two mono saccharides are bonded via a dehydration reaction (also called a condensation reaction or dehydration synthesis) that leads to the loss of a molecule of water and formation of a glycosidic bond.

Lactose is milk sugar. It is a

  1. mono saccharides

  2. di-saccharide

  3. Polysaccharides

  4. oligo-saccharides


Correct Option: B
Explanation:

A di-saccharide or biose is the carbohydrate formed when two mono saccharides undergo a condensation reaction which involves the elimination of a small molecule, such as water, from the functional groups only. Like mono saccharides, di-saccharides also dissolve in water, taste sweet and are called sugars,e.g., lactose, maltose etc..

- Hide questions