Biology for IGCSE & O level - Biological Molecules (Section 1 - No. 16)

What is a main difference between RNA and DNA?
RNA is a single strand, DNA is a double helix.
RNA contains ribose sugar, DNA contains deoxyribose sugar.
RNA contains uracil, DNA contains thymine.
All of the above

Explanation

RNA is single-stranded and contains ribose, while DNA is double-stranded and contains deoxyribose, and RNA uses uracil in place of thymine.

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