Answer:
The four nucleotide monomers are distinguished by their bases
A nucleotide contains adenine
T nucleotide contains thymine
G nucleotide contains guanine
C nucleotide contains cytosine All four of these nucleobases are relatively complex molecules, with the unifying feature that they all tend to have multiple nitrogen atoms in their structures. For this reason, nucleobases are often also called nitrogenous bases.
Step-by-step explanation: