the bonds in protein structure that are not broken on denaturation

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The bonds in protein structure, that are not broken on denaturation, are:

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Question

The bonds in protein structure, that are not broken on denaturation, are:

A

hydrogen bonds

B

peptide bonds

C

ionic bonds

D

disulphide bonds

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Updated on : 2022-09-05

Solution Verified by Toppr

Correct option is B)

If a protein loses its shape, it ceases to perform that function. The process that causes a protein to lose its shape is known as denaturation. Denaturation is usually caused by external stress on the protein, such as solvents, inorganic salts, exposure to acids or bases, and heat. The bonds such as hydrogen bond, ionic bonds in protein structure, are broken on denaturation, Even though disulfide bonds are strong, they can be broken.

Primary structure, such as the sequence of amino acids held together by covalent peptide bonds, is not disrupted by denaturation.

Option B is correct.

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The bonds in protein structure, which are not broken on denaturation, are:A.Hydrogen bondsB.Peptide bondsC.Ionic bondsD.Disulphide bond

The bonds in protein structure, which are not broken on denaturation, are:A.Hydrogen bondsB.Peptide bondsC.Ionic bondsD.Disulphide bond. Ans: Hint: We must have to know that the protein structure in amino acid chain molecules are arranged in a three ...

The bonds in protein structure, which are not broken on denaturation, are:

A.Hydrogen bonds B.Peptide bonds C.Ionic bonds D.Disulphide bond Answer Verified 168k+ views 1 likes

Hint: We must have to know that the protein structure in amino acid chain molecules are arranged in a three dimensional manner. The proteins are formed by the condensation reaction of amino acids. And during the condensation reaction there is a loss of water molecule and it will attach with the peptide bond. And the structure of protein in four types and that is, primary, secondary, tertiary and quaternary.Complete answer:

The secondary structure of protein contains hydrogen bonds. And during the denaturation process, the intermolecular hydrogen bond will break. Hence, option (A) is incorrect.

The peptide bond is a chemical bond which occurs between the carboxyl groups of the two molecules. By the reaction of the amino group of one molecule with the carboxyl group of the other molecule, a release of water molecules will take place. During the denaturation process of protein, the secondary and tertiary structure of protein will be changed but the peptide bond of the primary structure remains constant. Because, the denaturation reaction is not strong and its energy is not enough to break the peptide bond.

During the denaturation reaction of proteins, the weak ionic bond will rupture. Hence, the option (C) is correct.

The disulphide bond is broken by adding of a reducing agent in the denaturation process. Hence, option (D) is incorrect.

Hence, the option (C) is correct.Note:

We need to know that the peptide bond is present between two amino acids and it is a covalent chemical bond. And the important bonds present in protein is, hydrogen bond, peptide bond, disulphide bond and ionic bond. During the denaturation of proteins, there is a breakage of so many weak bonds like hydrogen bonds, which will take place. And these denatured proteins have more random structure and it is insoluble.

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Related Questions Question 1

: Which of the following statements are true about (X) and (Y)?

X) Globular Protein Y) Fibrous Protein

a. These are linear condensation polymers.

b. Insoluble in water.

c. These proteins have three dimensional folded structure.

d. These are cross linked proteins.

e. Soluble in water

f. These are held together by intermolecular hydrogen bonds.

A. X = a,b,c:Y=d,e,f

B. X = c,d,e:Y=a,b,f

C.X = b, c,a:Y = c.b.f

D.X =a,e,f:Y=b,c,f Question 2

The destruction of the biological nature and activity of proteins by heat or chemical agent is called as:

A. dehydration B. denaturation C. denitrogenation D. deamination Question 3

Which of the following amino acids has been solely regarded as a ketogenic amino acid?

(A). Threonine (B). Tyrosine (C). Phenylalanine (D). Leucine Question 4

In fire files the flashes are produced due to the slow combustion of a protein luciferin in air and moisture . The phenomenon is known as :

A.Photochemical change

B.Photo combustion C.Chemiluminescence D.None of these Question 5

Difference between globular proteins and fibrous proteins.

Question 6

The helical structure of protein is stabilized by

A.Peptide bond B.Dipeptide bond C.Hydrogen bond D.Vander Waal bond Question 7

Which of the following is NOT an example of secondary structure found in proteins?

A) Random coil

B) Hydrophobic folding

C) -Helix D) –Pleated sheet Question 8

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The bonds in protein structure, that are not broken on denaturation , are :

The bonds in protein structure, that are not broken on denaturation , are :

Home > English > Class 12 > Chemistry > Chapter > Biomolecules >

The bonds in protein structure...

The bonds in protein structure, that are not broken on denaturation , are :

Updated On: 27-06-2022

Ad 1 of 1 ( 01 : 00 ) ADVERTISEMENT Text Solution Open Answer in App A Hydrogen bonds B peptide bonds C ionic bonds D disulphide bonds Answer

The correct Answer is B

Answer

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