Question

this is a nucleotide. if c is uracil, b is __________ and the nucleotide comprises __________.
a. ribose, rna
b. ribose, dna
c. deoxyribose, rna
d. deoxyribose, dna

Explanation:

Nucleotides in RNA have ribose sugar. The structure shown has a sugar (B) which is ribose as it has a hydroxyl (-OH) group on the 2' - carbon position typical of ribose in RNA. In DNA, the sugar is deoxy - ribose which lacks an -OH group at the 2' - carbon. If C is uracil, which is specific to RNA, then the sugar B is ribose and the nucleotide is part of RNA.

Answer:

A. ribose, RNA