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CBSE Class 12 · 2011 · Delhi · BiomoleculesShort Answer

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Write the main structural differences between DNA and RNA. Of the four bases, name those which are common to both DNA and RNA.

Solution

Differences:
  1. Sugar — DNA holds \textbf{2-deoxyribose}; RNA holds \textbf{ribose}.
  2. Strands — DNA is a double helix; RNA is normally single-stranded.
  3. Bases — DNA has thymine; RNA has uracil instead.
Common to both: \textbf{adenine, guanine and cytosine}.

CBSE Class 12 Board · 2011 · Delhi · Subjective

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