Question

Nitrogen base $+$ Pentose sugar $+$ Phosphate group is

• A. nucleoside
• B. nucleotide
• C. nucleic acid
• D. pyrimidine base

Answer 1

Answer: (B)

nucleotide

Answer 2

A nucleotide is formed by the union of a phosphate group with a nucleoside. A nucleoside, intact, contains a sugar molecule along with an organic nitrogen base. Thus, a nucleotide contains an organic nitrogen base along with a sugar molecule and a phosphate group,
i.e., Nucleoside = Sugar molecule $+$ organic nitrogenous base Nucleotide = Nucleoside $+$ phosphate group.