digestion

• there are three important protease enzymes : endopeptidases, exopeptidases and dipeptidases
• endopeptidases = small proteins into polypeptides
• exopeptidases = polypeptides into dipeptides
• dipeptidases = dipeptides into amino acids
• dipeptidases are membrane bound meaning that they are part of the membrane of the epithelial cells lining the ileum
• ingestion = taking large peices of food into the body
• digestion = hydrolysis of large insoluble molecules into small soluble molecules
• absorption = taking up the soluble digestion products into the body's cells
• assimilation = using the absorbed materials in the body
• egestion = eliminating the undigested material