Carbon dioxide (CO2) is produced in cells as a function of cellular metabolism, so it can be found there. The CO2 is dumped into the blood stream and can be found there also. … Carbon dioxide then crosses the blood/air barrier in the lungs and can be found there.The CO2 is then exhaled in normal respiration. 4 people found this useful. 1  The Periodic Table of Elements Life is sustained by a number of chemical elements.o, CO2 is not found in DNA. Deoxyribonucleic acid (DNA) is a polymer of nucleotides. Each nucleotide is made up of a deoxyribose sugar, a nitrogen base (adenosine, cytosine, … guanine, or thymine), and a phosphate group.