Question
Which carbon atom (numbered from 1' to 5') of ribose lacks the oxygen to form deoxyribose ?
MHT CET
Chemistry
Biomolecules
2026
MHT CET 2026 (17 April Shift 1)
MHT CET Chemistry Question (2026) — Solution
Options
- A. 5'
- B. 3'
- C. 2'
- D. 1'
Answer
C. 2'
Step-by-step solution
Ribose and deoxyribose are pentose sugars found in RNA and DNA respectively. The structure of ribose has a hydroxyl group (-OH) attached to the 2' carbon atom. In deoxyribose, the 2' carbon atom has only a hydrogen atom (-H) attached to it, lacking the oxygen atom present in ribose. Thus, the 2' carbon atom of ribose lacks the oxygen to form deoxyribose. Answer: 2'
Related: Chemistry — Biomolecules · All PYQ Banks