The basic unit of a DNA molecule is the
A) nitrogenous base.
B) sugar-phosphate backbone.
C) amino acid.
D) nucleotide.
E) ribose sugar.

Question

Quizplus · Accepted Answer

The basic unit of a DNA molecule is the nucleotide, which consists of a nitrogenous base (adenine, thymine, guanine, or cytosine), a sugar molecule (deoxyribose), and a phosphate group. The nucleotides are linked together through phosphodiester bonds to form the sugar-phosphate backbone of the DNA molecule. Amino acids are the basic units of proteins, while ribose sugar is found in RNA instead of DNA.

The Basic Unit of a DNA Molecule Is the