DNA the molecule of life Trillions of cells Each cell. chromosomes 46 human chromosomes gene 2 meters of DNA 3 billion DNA subunits(the DNA bases: A, T, C, G) Approximately A 30,000 genes code for proteins that perform most life functions protein scout ass DNA: The molecular of life Genome: The collection of dna12 DNA: The molecular of life Genome: The collection of DNA