Which of the following statement is incorrect about RNA_________________?
Correct answer: B. It contains Adenine Guanine Thymine and Cytosine
- A. The pentose sugar in it is Ribose.
- B. It contains Adenine Guanine Thymine and Cytosine
- C. It is present in the nucleoli
- D. It may be folded back on itself to give double helical characteristics.
Explanation
RNA contains ribose sugar and the bases adenine, guanine, cytosine and uracil, not thymine. It is found in the nucleolus as ribosomal RNA and can fold back on itself to form short double-helical regions through complementary base pairing. Students may choose c if they think RNA occurs only in the cytoplasm, but several types of RNA are present in the nucleus and nucleolus.
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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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