You would place an order with your broker to buy 500 shares of JCP at a limit of $19.50. If the stock price drops to $19.50 per share (or less) and there is a seller, your broker would execute your order.
Chemical protein digestion starts in the stomach, where enzymes start to soften the protein molecules. A number of enzymes, including substances from the pancreas, then break down protein into its component amino acids in the small intestine. Amino acids are absorbed through the wall of the small intestine into the bloodstream and distributed throughout the body to repair injuries and replace dying cells.
The small intestine is where most chemical digestion takes place. Most of the digestive enzymes in the small intestine are secreted by the pancreas and enter the small intestine via the pancreatic duct. These enzymes enter the small intestine in response to the hormone cholecystokinin, which is produced in response to the presence of nutrients.