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कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

Protein found in a biological system with a unique three-dimensional structure and biological activity is called a native protein. When a protein in its native form, is subjected to a physical

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प्रश्न

Protein found in a biological system with a unique three-dimensional structure and biological activity is called a native protein. When a protein in its native form, is subjected to a physical change like change in temperature or a chemical change like, change in pH, denaturation of protein takes place. Explain the cause.

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उत्तर

Due to physical or chemical change, hydrogen bonding and various other attractive forces are disturbed, globules unfold and helix gets uncoiled to form a thread like molecule. Therefore, secondary and tertiary structure of protein loses all or part of their biological activity. This is called denaturation of proteins.

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अध्याय 14: Biomolecules - Multiple Choice Questions (Type - I) [पृष्ठ २११]

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एनसीईआरटी एक्झांप्लर Chemistry Exemplar [English] Class 12
अध्याय 14 Biomolecules
Multiple Choice Questions (Type - I) | Q 48 | पृष्ठ २११

संबंधित प्रश्न

How is tripeptide formed?


Discuss the optical activity of lactic acid.


Define the following as related to proteins:

Peptide linkage


What are the common types of secondary structure of proteins?


What type of bonding helps in stabilising the α-helix structure of proteins?


Differentiate between  the following:

Fibrous proteins and Globular proteins


Write one difference between α-helix and β-pleated structures of proteins.


Differentiate between the following :

Peptide linkage and Glycosidic linkage 


The protein responsible for blood clotting is ____________.


Which functional group participates in disulphide bond formation in proteins?


Dinucleotide is obtained by joining two nucleotides together by phosphodiester linkage. Between which carbon atoms of pentose sugars of nucleotides are these linkages present?


Optical rotations of some compounds along with their structures are given below which of them have D configuration.

(I)
(II)
(III)

Explain the terms primary and secondary structure of proteins. What is the difference between α-helix and β-pleated sheet structure of proteins?


Explain formation of peptide linkage in protein with an example.


The total number of negative charge in the tetrapeptide, Gly-Glu-Asp-Tyr at pH 12.5 will be ______. (Integer answers)


Write a classification of proteins with an example.


Match List I with List II:

List I List II
A. GLUT-4 I. Hormone
B. Insulin II. Enzyme
C. Trypsin III. Intercellular ground substance
D. Collagen IV. Enables glucose transport into cells

Choose the correct answer from the options given below:


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