The pH scale is a measurement system that indicates the concentration of HYDROGEN IONS in a solution.
The pH scale ranges from zero to 14. A pH that is less than 7 is considered to be acidic while a pH that is more than 7 is considered to be basic. pH 7 is considered to be neutral. The pH of a substance is dependent on the number of hydrogen ions that are present in the substance.
Genetic code is the answer. Genetic code gives instructions to the nucleus of every cells of what protein and enzymes needed for life to be made for the body.