BIO SCI 93 Lecture Notes - Lecture 3: Intracellular Ph, Twinkie, Amylase
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This reaction would be written as: 2 h2o -> h3o+ + oh- Good at dissolving things because water is a polar solvent. In one liter of pure, distilled water, there will be 0. 0000001 m each of h3o+ (often written as h+) and of oh- present. This is a small number but a significant one. Presence of a relatively mobile hydrogen ion can have drastic effects on other molecules in solution. Had people exercise, then took samples of quadriceps and measured intracellular ph as well as pyruvate and lactate concentrations. A: muscle ph and lactate concentration are negatively correlated. Dr. haub ate only twinkies for 10 weeks and lost 27 pounds. Carboxyl: polar, hydrophilic, acidic (donates a proton) Amino: polar, hydrophilic, basic (accepts a proton) Hydroxyl: polar, hydrophilic, not acidic or basic. Enzyme: amylase (-ase is enzyme) converts starch to simple sugars. Subjects complete stressful or non-stressful (rest) activities and salivary amylase concentrations were measured before and after each activity.
