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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 - Chemistry

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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

टीपा लिहा
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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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पाठ 14: Biomolecules - Multiple Choice Questions (Type - I) [पृष्ठ २०९]

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

संबंधित प्रश्‍न

How are proteins classified on the basis of molecular shapes?


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?


Differentiate between the following :

Peptide linkage and Glycosidic linkage 


The helical structure of protein is stabilized by:


Which of the following statement is correct:


Which of the following are purine bases?

(i) Guanine

(ii) Adenine

(iii) Thymine

(iv) Uracil


Assertion: β-glycosidic linkage is present in maltose,

Reason: Maltose is composed of two glucose units in which C–1 of one glucose unit is linked to C–4 of another glucose unit.


Peptide linkage is:


Explain formation of peptide linkage in protein with an example.


Given below are two statements labelled as Assertion (A) and Reason (R).

Assertion (A): Proteins are found to have two different types of secondary structures viz alpha-helix and beta-pleated sheet structure.

Reason (R): The secondary structure of proteins is stabilized by hydrogen bonding.

Select the most appropriate answer from the options given below:


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.


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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