Question

together, the four macromolecules make up the majority of the dry weight of a cell. (water, a small molecule, makes up the majority of the wet weight). large biological molecules perform a wide range of jobs in an organism. some carbohydrates store fuel for future energy needs, and some lipids are key structural components of cell membranes. nucleic acids store and transfer hereditary information, much of which provides instructions for making proteins. proteins themselves have perhaps the broadest range of functions: some provide structural support, but many are like little machines that carry out specific jobs in a cell, such as catalyzing metabolic reactions or receiving and transmitting signals. before we take a deep dive into understanding each of the four macromolecules, let’s first define the terms monomer and polymer.
monomers and polymers
most large biological molecules are polymers, long chains made up of repeating molecular subunits, or building blocks, called monomers. if you think of a monomer as being like a bead, then you can think of a polymer as being like a necklace, a series of beads strung together. carbohydrates, nucleic acids, and proteins are often found as long polymers in nature. because of their polymeric nature and their large (sometimes huge!) size, they are classified as macromolecules, big (macro -) molecules made through the joining of smaller subunits.
what are monomers and polymers and how do they relate to macromolecules?

Explanation:

Monomers are molecular subunits. Polymers are long - chain molecules made of monomers. Macromolecules like carbohydrates, nucleic acids, and proteins are often polymers. They are large molecules formed by joining smaller monomers.

Answer:

Monomers are the building blocks (smaller molecular subunits). Polymers are long chains of monomers. Macromolecules are large molecules, many of which are polymers made up of monomers.