THE MOLECULAR BASIS OF INHERITANCE
STRUCTURE OF NUCLEIC ACIDS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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RNA is a protein, whereas DNA is a nucleic acid
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DNA is a protein, whereas RNA is a nucleic acid
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DNA nucleotides contain a different sugar than RNA nucleotides
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RNA is a double helix, but DNA is single-stranded
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Detailed explanation-1: -The statement ‘DNA nucleotides contain a different sugar than RNA nucleotide’ BEST summarizes the structural differences between DNA and RNA (Option C). DNA is a double helix molecule composed of two long chains of nucleotides that are paired by hydrogen bonds, whereas RNA molecule is a single strand of nucleotides.
Detailed explanation-2: -There are two differences that distinguish DNA from RNA: (a) RNA contains the sugar ribose, while DNA contains the slightly different sugar deoxyribose (a type of ribose that lacks one oxygen atom), and (b) RNA has the nucleobase uracil while DNA contains thymine.
Detailed explanation-3: -The structural difference between nucleotides rests in two instances: A DNA nucleotide contains deoxyribose sugar, whereas an RNA contains the sugar ribose in every nucleotide. The nitrogenous bases in DNA can be adenine, guanine, cytosine, and thymine.
Detailed explanation-4: -DNA is a double-stranded molecule that has a long chain of nucleotides. RNA is a single-stranded molecule which has a shorter chain of nucleotides. DNA replicates on its own, it is self-replicating. RNA does not replicate on its own.
Detailed explanation-5: -The sugar component in RNA is ribose and the sugar component in DNA is 2-deoxyribose. The sugar component in RNA is arabinose and the sugar component in DNA is ribose.