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NEET CHEMISTRYBiomoleculesMedium

Question

The correct statements regarding "Denaturation" are: (a) Denaturation of proteins causes the loss of secondary and tertiary structures of the protein. (b) Denaturation leads to the conversion of a double strand of DNA into a single strand. (c) Denaturation affects the primary structure which gets distorted.

A

(a), (b) and (c)

B

(b) and (c)

C

(a) and (c)

D

(a) and (b)

Step-by-Step Solution

Statement (a) is correct: During denaturation of proteins, the unfolding of the protein chain occurs, leading to the loss of its secondary and tertiary structures, thereby losing its biological activity. Statement (b) is correct: In the case of DNA, denaturation (due to heat or change in pH) breaks the hydrogen bonds between the base pairs, causing the double-stranded DNA to separate into two single strands. Statement (c) is incorrect: The primary structure of a protein (the linear sequence of amino acids held together by strong covalent peptide bonds) remains completely intact and unaffected during denaturation. Hence, only statements (a) and (b) are correct.

Exam Context & Concepts Covered

This question aligns with the NEET CHEMISTRY syllabus, specifically targeting concepts from Biomolecules. Mastering this topic is crucial for scoring well in the upcoming medical entrance examinations. Solving conceptually related problems will help you understand the nuances of these concepts and improve your problem-solving speed.

CHEMISTRYBiomoleculescorrectstatementsregardingdenaturationdenaturation

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