Which statement about RNA is correct?
Correct answer: B. It contains ribose and is usually single stranded
- A. It contains thymine in place of uracil
- B. It contains ribose and is usually single stranded
- C. It is always double stranded like DNA
- D. It contains deoxyribose and uracil
Explanation
RNA carries ribose, which has a hydroxyl group at carbon 2, and it is normally a single strand that can fold back on itself, as tRNA does into its clover leaf shape. Uracil replaces thymine in RNA, not the other way round, and deoxyribose belongs to DNA. The extra hydroxyl is also why RNA is chemically less stable than DNA.
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About Ribonucleic Acid (RNA)
Ribonucleic acid is generally a single-stranded nucleic acid containing ribose and uracil instead of thymine. Coverage includes mRNA, tRNA and rRNA, complementary base pairing, transcription and translation, and the differences between RNA and DNA in structure, location and biological function.
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