BiomoleculeshardMCQ SINGLE⭐ Must-Do

Which of the following specific structural statements clearly and fundamentally differentiates the cBiomolecules Chemistry Question

Question

Which of the following specific structural statements clearly and fundamentally differentiates the chemical architecture of DNA from that of RNA?

Answer: B

💡 Solution & Explanation

Both nucleic acids possess aldopentose sugars. RNA natively utilizes $\beta$ - $D$ -ribose, while DNA strictly incorporates $\beta$ - $D$ -2-deoxyribose, which structurally differs solely by the complete absence of the oxygen atom (and thus the $-OH$ group) specifically at the $2'$ carbon.

💬
Still have doubts about this question?
Send it to our AI chemistry tutor on WhatsApp — gets answered in minutes
Ask on WhatsApp →

Practice 22,000+ questions like this

AI-adaptive practice, video lectures, and full JEE Advanced Chemistry content — all in one place.

JEE Advanced · JEE Mains · NEET · IChO · AP Chemistry