मराठी
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

Advertisements
Advertisements

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.

टीपा लिहा
Advertisements

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.

shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 14: Biomolecules - Multiple Choice Questions (Type - I) [पृष्ठ २११]

APPEARS IN

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

संबंधित प्रश्‍न

How are proteins classified on the basis of molecular shapes?


What is peptide linkage?


Define the following as related to proteins:

Peptide linkage


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


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


Differentiate between the following :

Peptide linkage and Glycosidic linkage 


Which of the following biomolecules is insoluble in water?


The correct statement for protein haemoglobin.


In fibrous proteins, polypeptide chains are held together by:

(i) van der Waals forces

(ii) disulphide linkage

(iii) electrostatic forces of attraction

(iv) hydrogen bonds


α-Helix is a secondary structure of proteins formed by twisting of polypeptide chain into right-handed screw like structures. Which type of interactions are responsible for making the α-helix structure stable?


Peptide linkage is:


Out of the following, which type of interaction is responsible for the stabilisation of the α-helix structure of proteins?


The correct structure of Ruhemann's Purple, the compound formed in the reaction of ninhydrin with proteins is:


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


An α-helix is a structural feature of ______.


Proteins are polymers of ______.


What is the effect of denaturation on the structure of proteins?


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:


Statement I: A protein is imagined as a line, the left end represented by first amino acid (C-terminal) and the right end represented by last amino acid (Nterminal).

Statement II: Adult human haemoglobin, consists of 4 subunits (two subunits of a type and two subunits β type.)

In the light of the above statements, choose the correct answer from the options given below:


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×