Most macromolecules are made from single subunits, or building blocks, called monomers. The monomers combine with each other via covalent bonds to form larger molecules known as polymers. ... Thus, the monomers that are joined together are being dehydrated to allow for synthesis of a larger molecule.

How macromolecules are built and broken down?

Dehydration synthesis reactions build molecules up and generally require energy, while hydrolysis reactions break molecules down and generally release energy. Carbohydrates, proteins, and nucleic acids are built up and broken down via these types of reactions, although the monomers involved are different in each case.

How did the biomolecules assembled together?

Monomers are assembled into polymers through a process called dehydration synthesis. Polymers are broken down into monomers through a process called hydrolysis (hydro = water, lyse = to break). Biologically important molecules are grouped into four classes: carbohydrates, lipids, proteins, and nucleic acids.