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

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

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प्रश्न

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

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उत्तर

(ii) disulphide linkage

(iv) hydrogen bonds

Explanation:

In fibrous proteins, polypeptide chains are held together by disulphide linkage and hydrogen bonds.

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अध्याय 14: Biomolecules - Multiple Choice Questions (Type - I) [पृष्ठ २०९]

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एनसीईआरटी एक्झांप्लर Chemistry Exemplar [English] Class 12
अध्याय 14 Biomolecules
Multiple Choice Questions (Type - I) | Q 26 | पृष्ठ २०९

संबंधित प्रश्न

How are proteins classified on the basis of molecular shapes?


How is tripeptide formed?


What are the common types of secondary structure 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.


Which functional group participates in disulphide bond formation in proteins?


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

(I)
(II)
(III)

Proteins can be classified into two types on the basis of their molecular shape i.e., fibrous proteins and globular proteins. Examples of globular proteins are:

(i) Insulin

(ii) Keratin

(iii) Albumin

(iv) Myosin


Which of the following are purine bases?

(i) Guanine

(ii) Adenine

(iii) Thymine

(iv) Uracil


Which moieties of nucleosides are involved in the formation of phosphodiester linkages present in dinucleotides? What does the word diester in the name of linkage indicate? Which acid is involved in the formation of this linkage?


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


The main structural feature of proteins is


Presence of disulphide link gives rise to which structure of protein?


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


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 ______.


Write a classification of proteins with an example.


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:


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