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.
Lowering the temperature will reduce the rate of the reaction so low as to make it seem non-functional. Altering the pH above or below its optimum pH will also reduce the enzyme's activity, and at extremes the enzyme may be permanently denatured.