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JEE Main levelSingle correct optionDifficulty 2 of 3bm144

Which statement correctly distinguishes RNA from DNA?

  1. ARNA contains 2-deoxyribose and thymine and is double stranded.
  2. BRNA contains ribose and uracil and is usually single stranded.
  3. CRNA contains ribose and thymine and is double stranded.
  4. DRNA contains 2-deoxyribose and uracil and is usually single stranded.

Answer: B

RNA has ribose (OH at C2), uracil in place of thymine, and is normally single stranded. DNA has 2-deoxyribose and thymine in a double helix.
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