Learn from the past and anticipate answering similar questions on the AP Exam this year... 1999 Exam - Question 4: Using the information in the pie charts above, identify two budgetary barriers that hinder the creation of new policy initiatives. Explain why each of the barriers you identified persists.
Glands lining the stomach secrete hydrochloric acid that dissolves food particles and protein-digesting enzymes, called pepsin. Final stages of digestion and most of the nutrient absorption occurs in next portion of the tract: the small intestine. The small intestine is divided into 3 segments-duodenum, jejunum, and ileum. The pancreas is a gland located behind the stomach.
Intercellular Digestion: 1. Digestion occurs in the food vacuoles within cells. 2. Lysosomal enzymes are secreted into the food vacuole. 3. Products of digestion diffuse into cytoplasm through vacuolar membrane. 4. Ingestion occurs through pinocytic vesicle,e.g. protozoans, spongens and coeleneterates. 1. Digestion occurs outside of cells in the lumen of the alimentary canal. 2. Salivary, gastric pancreatic and intestinal enzymes are secreted into the digestive cavity. 3. Digested food materials are absorbed into blood through gut epithelia.