Answer
Condensation is a tremendous benefit from this chemistry as it allows for it's effects to be at times reversed, allowing for the scientist to take a step back if necessary.
Work Step by Step
Condensation allows for the cells themselves to break down their own macromolecules, and, it can be reversed by use of hydrolysis. Plus, water is already available in the cell. Using condensation, subunits in the macrocolecules can be recovered and used again to make other macromolecules.
