NEET 2019 Odisha · BiologyPrevious Year Question
"Ramachandran plot" is used to confirm the structure of :-
Answer: (B) Proteins. Answer: (B) Proteins.
- A.RNA
- B.Proteins✓
- C.Triacylglycerides
- D.DNA
Correct Answer
(B) Proteins
Solution & Explanation
Answer: (B) Proteins. Solution: The Ramachandran plot is used to validate the secondary/tertiary conformation of proteins by mapping the allowed backbone dihedral angles of amino-acid residues. NCERT describes protein structure at four levels (primary, secondary, tertiary, quaternary) under the chapter on structure of proteins, the context in which the Ramachandran plot is relevant. It is not used for nucleic acids (RNA/DNA) or triacylglycerides. NCERT Reference: Ch 9, p.111, line ~37 — "biologists describe the protein structure at four levels. The sequence of amino acids i.e., the positional information in a protein ... is called the primary structure"
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