All living things are made up of four classes of biological macromolecules: carbohydrates, lipids, proteins, and nucleic acids.

Question

Macromolecules are large molecules composed of thousands of covalently connected atoms, also called polymers. A polymer is a long molecule consisting of many similar building blocks; the small building-block molecules are called monomers.

All cells have thousands of different macromolecules, that vary among cells of an organism, vary more within a species, and vary even more between species. A huge variety of polymers can be built from a small set of monomers.

What statements are true about the biological macromolecules.

(2 points)
Choices:

-Ready cellular energy comes in the form of lipids.
-Carbohydrates contain nitrogen and therefore differ from the other macromolecules
-All biomolecules could be called carbon-based molecules.
-The monomers of DNA are nucleotides.
-Cell membranes are made, in part, from phospholipids.

Answer 1

The statements that are true about the biological macromolecules are:

- The monomers of DNA are nucleotides.
- Cell membranes are made, in part, from phospholipids.