Question

Which carbon atom (numbered from 1' to 5') of ribose lacks the oxygen to form deoxyribose ?

• A. 5'
• B. 3'
• C. 2'
• D. 1'

Hint:

Deoxyribose has no OH on the 2' carbon.

Answer 1

The Correct Option is C

Step 1: Compare the sugars
Ribose: 2'-OH and 3'-OH. Deoxyribose: 2'-H and 3'-OH.

Step 2: Locate
The missing oxygen is at 2', option (C).

Final Answer:
The 2' carbon has lost its oxygen, option (C). \[ \boxed{2'} \]