Question

The similarity between DNA and RNA is that both are
(a) double stranded
(b) having similar sugars
(c) polymers of nucleotides
(d) having similar pyrimidines

Answer 1

The similarity between DNA and RNA is that both are (c) polymers of nucleotide.

Explanation:

Reason for choosing (c) as correct answer:

• The DNA, as well as RNA, is called polymers of nucleotide. It is because it is composed of nucleotide.
• The three components of nucleotide are bases, sugar molecules and phosphate group acting as the backbone of the structure.

Reason for not choosing (a), (b) and (d) as correct answer:

• The DNA has double strands whereas RNA is mostly single-stranded thus double strands are not the similarity.
• DNA is composed of deoxyribose sugar, whereas RNA is composed of Ribose sugar.
• DNA has cytosine and thymine as pyrimidines, whereas RNA has cytosine and Uracil as pyrimidines.

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