NEET Chemistry Nucleic Acids MCQ Question
Which of the following combinations correctly describe the characteristics and functions of nucleic acids?
Nucleotides in DNA are linked by phosphodiester bonds; RNA contains uracil instead of thymine.
DNA is a single-stranded molecule; RNA is a double-stranded structure.
Nucleic acids are responsible for protein synthesis; both DNA and RNA contain ribose sugar.
DNA is the chemical basis of heredity; RNA plays no role in heredity.
Correct Answer
Detailed Explanation
Option A is correct because nucleotides in DNA are indeed linked by phosphodiester bonds and RNA contains uracil instead of thymine. Option B is incorrect as DNA is double-stranded while RNA is single-stranded. Option C is incorrect because only RNA contains ribose, whereas DNA contains 2-deoxyribose. Option D is incorrect since RNA does play a role in heredity through its involvement in protein synthesis.
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