Question

multiple - choice question
a monomer is a
chain of molecule
single atom
building block
ring of proteins
rewatch

Explanation:

A monomer is a small molecule that can react together with other monomers to form a polymer. It serves as the basic unit or building block for creating larger macromolecules (polymers). A chain of molecules would refer to a polymer (not a monomer). A single atom is just an atom, not a monomer. A ring of proteins is not the definition of a monomer.

Answer:

building block