What's Happening DNA is the material in your cells that tell your body how it should operate and look. DNA is found in the cells of nearly every living thing. In humans it is an extremely long molecule. If we stretched out all the DNA in one of your cells, it would be about six feet long. DNA contains the instructions for building proteins.
Proteins are the chemical building blocks of living materials.
DNA makes proteins, proteins build cells, and cells make up people. Biotechnology School Enrichment Grades 5-6, October 1997.