All organisms are constructed from a few major types of biological molecules called macromolecules, large molecules made of repeating subunits called polymers.
Macromolecules that are made up of units of smaller molecules (called monomers) that repeat themselves to make up their entire structure are called polymers.
Therefore, we can conclude that a macromolecule is the union of a repetition of simpler biological molecules that reach high molecular weights.
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