Gallbladder a. Pear-shaped muscular sac attached to ventral surface of liver. Stores the 1,000 ml of bile produced each day. Water is reabsorbed to thicken bile to mucus-like material. Bile exits gallbladder by common bile duct. Digestive Enzymes Digestive enzymes are hydrolytic enzymes that catalyze degradation of a molecule by addition of water at specific bonds.
Pancreatic trypsin digests protein plus water to peptides.
Best Conditions for Digestion a. Laboratory experiments demonstrate digestion of egg protein requiring enzyme pepsin and HCl to be present. Recommendations in the food pyramid suggest a diet that may provide some protection against heart disease, cancer, and other serious illnesses. Vegetables and fruits also provide vitamins, minerals, and roughage. Carbohydrates a. Are the quickest, most readily available source of energy. It is possible to cut down on consumption of dietary sugar.