Question:
The linkage formed between 5' and 3' carbon atoms of the pentose sugar in nucleotides is
The linkage formed between 5' and 3' carbon atoms of the pentose sugar in nucleotides is
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Biology Tip: Sugar-phosphate backbone of DNA is formed by repeating 3'-5' phosphodiester bonds.
Updated On: Apr 24, 2026
- glycosidic
- phosphomonoester
- amide
- peptide
- phosphodiester
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The Correct Option is
Solution and Explanation
Concept:
Nucleotides join together in DNA and RNA chains through phosphate linkages.
Step 1: Understand bonding positions.
The phosphate group connects: - $3'$ carbon of one sugar - $5'$ carbon of next sugar
Step 2: Name of linkage.
Since one phosphate forms two ester bonds with two sugars, it is called: \[ \text{Phosphodiester linkage} \]
Step 3: Final answer.
\[ \boxed{\text{Phosphodiester}} \]
Hence, correct option is (E).
Nucleotides join together in DNA and RNA chains through phosphate linkages.
Step 1: Understand bonding positions.
The phosphate group connects: - $3'$ carbon of one sugar - $5'$ carbon of next sugar
Step 2: Name of linkage.
Since one phosphate forms two ester bonds with two sugars, it is called: \[ \text{Phosphodiester linkage} \]
Step 3: Final answer.
\[ \boxed{\text{Phosphodiester}} \]
Hence, correct option is (E).
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