Question

define the following: 2. macromolecules - 3. polymers -

Explanation:

Macromolecules are large molecules essential for life, often composed of many atoms. Polymers are substances made up of repeating subunits called monomers, which can form macromolecules.

Answer:

1. Macromolecules: Large, complex molecules important for biological functions, typically composed of numerous atoms.
2. Polymers: Substances made of repeating monomer units that can form large - scale structures.