The nucleus, a gigantic information processing center, is the cell’s “headquarters”. Inside the nucleus we can find the chromosomes: 23 chromosome pairs, each one an enormous database. These chromosomes are comprised of entwined DNA strands. The detailed plan of all our body’s functions are kept in store and coded into these strands. A DNA strand is similar in shape to a spiraling screw made of a sequential arrangement of 4 different molecules representing 4 different letters. Thanks to this sequential arrangement, an enormous amount of information, which would fill hundreds of encyclopedic volumes, is stored in our DNA. This coding system memorizes the detailed plans for thousands of enzymes and other proteins used within the cell. These 25 to 30,000 genes can produce more than 100,000 specific proteins.