Question:
The sugar moiety present in RNA molecule is
The sugar moiety present in RNA molecule is
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Remember: RNA = Ribose; DNA = Deoxyribose. This simple letter matching helps you avoid mixing up these two critical biological sugars.
Updated On: May 6, 2026
- \(\beta\)-D-2-deoxyribose
- \(\beta\)-D-galactose
- \(\beta\)-D-fructofuranose
- \(\beta\)-D-ribose
- \(\beta\)-D-glucopyranose
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The Correct Option is D
Solution and Explanation
Concept: Nucleic acids (DNA and RNA) are biopolymers where the backbone consists of alternating sugar and phosphate groups.
• RNA (Ribonucleic Acid): Contains a five-carbon sugar (pentose) called ribose.
• DNA (Deoxyribonucleic Acid): Contains 2-deoxyribose, which lacks an oxygen atom at the second carbon position compared to ribose.
• Cyclic Form: In these biopolymers, the sugar exists in the furanose (5-membered ring) form and specifically the \(\beta\) configuration.
Step 1: Distinguish between RNA and DNA sugars. The name "Ribonucleic Acid" itself identifies the sugar as ribose. Specifically, it is \(\beta\)-D-ribofuranose, often referred to simply as \(\beta\)-D-ribose in multiple-choice contexts.
Step 2: Verify other options. Option (A) is for DNA. Options (B), (C), and (E) are hexoses (6-carbon sugars) involved in energy metabolism (Galactose, Fructose, Glucose) rather than the structural backbone of nucleic acids.
• RNA (Ribonucleic Acid): Contains a five-carbon sugar (pentose) called ribose.
• DNA (Deoxyribonucleic Acid): Contains 2-deoxyribose, which lacks an oxygen atom at the second carbon position compared to ribose.
• Cyclic Form: In these biopolymers, the sugar exists in the furanose (5-membered ring) form and specifically the \(\beta\) configuration.
Step 1: Distinguish between RNA and DNA sugars. The name "Ribonucleic Acid" itself identifies the sugar as ribose. Specifically, it is \(\beta\)-D-ribofuranose, often referred to simply as \(\beta\)-D-ribose in multiple-choice contexts.
Step 2: Verify other options. Option (A) is for DNA. Options (B), (C), and (E) are hexoses (6-carbon sugars) involved in energy metabolism (Galactose, Fructose, Glucose) rather than the structural backbone of nucleic acids.
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