A nucleotide contains
A)DNA and RNA.
B)a sugar and a phosphate.
C)complementary purines and pyrimidines.
D)RNA,protein,and lipids.
E)a sugar,a phosphate,and a nitrogen base.

Question

Quizplus · Accepted Answer

A nucleotide is made up of three components: a sugar (either deoxyribose or ribose), a phosphate group, and a nitrogenous base (either a purine or a pyrimidine). Therefore, the correct choice is E, which describes a sugar, a phosphate, and a nitrogen base as the constituents of a nucleotide. The other options are not completely accurate: DNA and RNA are types of nucleic acids made up of nucleotides, but a single nucleotide does not contain both DNA and RNA; complementary purines and pyrimidines refer to base pairing in DNA, but only describe two of the three components of a nucleotide; and RNA, protein, and lipids are three completely different types of biomolecules that do not constitute a nucleotide.

A Nucleotide Contains