Which row correctly gives the sugar unit of the nucleoside shown and the nucleic acid in which it occurs?

A2-Deoxy-D-ribose; DNA
BD-Ribose; RNA
C2-Deoxy-D-ribose; RNA
DD-Ribose; DNA

Answer: A

The five-membered sugar has a CH2 at C-2 instead of CH(OH), so it is 2-deoxyribose. Nucleosides built on 2-deoxyribose are DNA components; the base here is thymine, so the nucleoside is thymidine.

Practice Biomolecules More on Peptides and nucleotides from drawn structures

Previous questionNext question

More questions on Peptides and nucleotides from drawn structures

Which residue is the N-terminal residue of the dipeptide shown? JEE Main level
The dipeptide shown is completely hydrolysed with aqueous acid (no racemisation). Which of Structures A to D shows the products? JEE Main level
For the nucleoside shown, which row gives the name of the base and the number of hydrogen bonds it forms with its complementary base in doub... JEE Main level
In the nucleoside shown, which atom of the base forms the N-glycosidic bond to C-1' of the sugar? JEE Main level
Which of the following statements about the tripeptide shown is/are correct? JEE Advanced level
Which description of the nucleotide shown is correct? JEE Advanced level