Final answer:
The order from largest to smallest is macromolecule, monomer, and element. Macromolecules are composed of monomers, which are made of elements.
Step-by-step explanation:
The correct order of terms from largest to smallest is macromolecule, monomer, and element. A macromolecule is a large complex molecule made up of smaller units known as monomers. These monomers are simple molecules which can join together to form polymers. Elements are the simplest substance and cannot be broken down into any other substance. Each element is made up of atoms, the smallest unit of matter that retains the properties of the element.
An example within the biological context is deoxyribonucleic acid (DNA). DNA is a macromolecule that contains genetic instructions. It is composed of monomers called nucleotides, which are the basic building blocks of DNA. Each nucleotide, in turn, contains elements such as carbon, hydrogen, oxygen, nitrogen, and phosphorus.