Every truck and crane in the city needs gas. In your body, that gas is ATP , the universal energy currency generated from the sugar in your diet. Practical Application: The Case of "Milk to Medicine"
One of the most famous practical stories in biochemistry history involves and K.P. Link .
Steenbock realized that exposing milk to ultraviolet light (irradiating it) increased its Vitamin D levels, which eventually led to the cure for rickets , a bone-softening disease in children.
Modern biochemists look for "molecular fingerprints" of diseases like cancer before physical symptoms even appear.
Tucked away in a central library (the nucleus), the DNA contains the master plans for every building and worker in the city.