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.
Enzymes typically work best under certain. narrowly defined conditions, such as. temperature, pH, and ion concentration. Changing these alter the rate of reaction caused. by the enzyme. In nature, organisms adjust the. conditions of their enzymes to produce an. optimum rate of reaction, where necessary, or. they may have enzymes which are adapted to. function well in extreme conditions where they. live. All enzymes have an optimal temperature in. which they work the best.