1. which macromolecules were present in the unknown solution?

These macromolecules could either be amino acids, proteins or nucleic acids. They are responsible for the chemical changes and reactions that affects largely the cell and its composition.

A macromolecule is a very large molecule, such as protein, commonly created by polymerization of smaller subunits (monomers). They are typically composed of thousands or more atoms.

well, you see. the answer to your question is quite simple. the thing that is big, powerful, and over 9,000 is your mom.