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

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

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प्रश्न

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?

टीपा लिहा
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उत्तर

When nucleoside is linked to phosphoric acid at 5-position of sugar moiety, it forms a nucleotide. Nucleotides are joined together by phosphodiester link between 5' and 3' carbon atoms of the pentose sugar.

Phosphoric acid is involved in the formation of this linkage.

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

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एनसीईआरटी एक्झांप्लर Chemistry Exemplar [English] Class 12
पाठ 14 Biomolecules
Multiple Choice Questions (Type - I) | Q 51 | पृष्ठ २११

संबंधित प्रश्‍न

What is peptide linkage?


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


Which of the following biomolecules is insoluble in water?


The protein responsible for blood clotting is ____________.


Proteins are found to have two different types of secondary structures viz. α-helix and β-pleated sheet structure. α-helix structure of protein is stabilised by:


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

(I)
(II)
(III)

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?


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.


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


Explain formation of peptide linkage in protein with an example.


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


An α-helix is a structural feature of ______.


Proteins are polymers of ______.


Assertion (A): Proteins are polymers of α-amino acids connected by a peptide bond.

Reason (R): A tetrapeptide contains 4 amino acids linked by 4 peptide bonds.


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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