Ritchie Valens. Richard Steven Valenzuela (May 13, 1941 â February 3, 1959), known as Ritchie Valens, was an American singer, songwriter, and guitarist. A rock & roll pioneer and a forefather of the Chicano rock movement, Valens' recording career lasted eight months, as it abruptly ended when he died in a plane crash.
Why do enzymes in our stomach work best at a pH of 7? Actually the pH of the stomach very acid relative to pH 7 (between pH 1-4). An acidic stomach is optimal for the breaking of hydrogen bonds that makes up the complex compoundsâ¦ in the food we ingest, like proteins.
pH Levels. An enzyme loses its ability to function when it loses its shape. Because ionic and hydrogen bonds are important factors in enzymes retaining their specific shapes, pH levels that interrupt this bonding, negatively impact enzyme activity. In a study conducted at the College of DuPage, for instance, hydrogen peroxidase from cow operated most efficiently at a neutral pH of 7.