Symptoms of a urinary tract infection (UTI) are similar in men, women, and children. Early symptoms and signs are usually easy to recognize and primarily involve pain, discomfort, or burning when trying to urinate.
Protein digestion begins in the stomach with the action of an enzyme that we previously learned about called pepsin. Pepsin is the active protein-digesting enzyme of the stomach. When pepsin acts on the protein molecule, it breaks the bonds that hold the protein molecule together, called peptide bonds.
Proteins in the mouth, stomach and intestine called enzymes are the primary facilitators of chemical digestion. In the mouth, chemical digestion begins when the food enters and encounters saliva and the enzymes that it contains.hen the food reaches the stomach, different hormones trigger the body to begin releasing enzymes that further digest the food. Pepsin is the name of the enzyme that breaks down most of the proteins in the food. The digestion of carbohydrates, which began in the mouth with an enzyme called amylase, also continues here.