alleryStart learning →How does ribose differ from deoxyribose?
ARibose carries a hydroxyl group on its first carbon
BRibose carries one more carbon than deoxyribose does
CRibose carries a hydroxyl group on its second carbon
DRibose carries a phosphate group on its second carbon
Answer & Solution
Correct answer: C. Ribose carries a hydroxyl group on its second carbon
1. The pentose sugar in DNA is deoxyribose and in RNA it is ribose.
2. Both sugars have five carbons, so the difference is not in carbon count.
3. Ribose carries a hydroxyl group on its second carbon.
4. Deoxyribose carries only a hydrogen at that same position, which is what deoxy records.
5. The base attaches at the first carbon in both sugars, so the first carbon is not where they differ.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 3 "Biological Macromolecules", section 3.5 Nucleic Acids_
Keep practising Biological Macromolecules
Browse all Biological Macromolecules questions for CSIR NET, or explore more Biology topics.
Related questions
Even though RNA is single stranded, what shape does most RNA still take?Which RNA is the smallest, and what does it do?What is the role of transfer RNA in protein synthesis?If a DNA strand reads AATTGCGC, what is the sequence of the complementary RNA?Which are the four major types of RNA?How is RNA built compared with DNA?If one DNA strand reads AATTGGCC, what does its complementary strand read?What distance separates one base pair from the next in the DNA double helix?