Which of the following characteristics of Figure 1 best shows that the fragment is RNA and not DNA?
Understand the Problem
The question is asking which characteristic of the nucleic acid fragment depicted in the figure indicates that the fragment is RNA and not DNA. It involves understanding the structural differences between RNA and DNA.
Answer
The presence of the hydroxyl group (OH) on the 2' carbon in the sugars.
The presence of the hydroxyl group (OH) on the 2' carbon in the sugars of the nucleotide chain indicates that the fragment is RNA and not DNA.
Answer for screen readers
The presence of the hydroxyl group (OH) on the 2' carbon in the sugars of the nucleotide chain indicates that the fragment is RNA and not DNA.
More Information
RNA differs from DNA mainly by the presence of ribose sugar, where RNA has a hydroxyl group (OH) on the 2' carbon instead of DNA's hydrogen (H).
Tips
A common mistake is confusing the 5' to 3' orientation, which is the same in both RNA and DNA.
Sources
- The web page with info on - Organic vs Inorganic Compounds - coursesidekick.com
- Ribosomes, Transcription, Translation | Learn Science at Scitable - nature.com
- AP Biology test 1 corrections.docx - Mandy Tolman Mr. - coursehero.com
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