NEET Chemistry (general) MCQ Question
Which combination of statements about proteins is correct?
Native proteins maintain their biological activity; denaturation involves the unfolding of protein structures; denaturation can be caused by changes in temperature or pH.
Denaturation refers to the formation of new bonds in proteins; native proteins have no specific structure; proteins are not affected by environmental changes.
All proteins have the same three-dimensional structure; denaturation is a reversible process; temperature changes have no effect on proteins.
Denatured proteins can regain their biological activity immediately; primary structure is the main determinant of protein function; proteins only exist in quaternary structure.
Correct Answer
Detailed Explanation
Statement A accurately reflects the properties of native proteins and the process of denaturation, which involves unfolding due to environmental changes such as temperature or pH. The other options contain incorrect information about protein structure and behavior.
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