Question

In both DNA and RNA, the heterocyclic base and phosphate ester linkages are at:

• A. $C_5$ and $C_2$ respectively, of the sugar molecule
• B. $C_2$ and $C_5$ respectively, of the sugar molecule
• C. $C_1$ and $C_5$ respectively, of the sugar molecule
• D. $C_5$ and $C_1$ respectively, of the sugar molecule

Answer 1

Answer: (C)

$C_1$ and $C_5$ respectively, of the sugar molecule

In both DNA and RNA, the heterocyclic base and phosphate ester linkages are at $C_1$ and $C_5$ respectively, of the sugar molecule.