|
Title: What are the results of chemical digestion of carbohydrates proteins and fats? Post by: datha on Feb 19, 2013 If you answer the question please put a web link my teacher wants a reference.
Title: What are the results of chemical digestion of carbohydrates proteins and fats? Post by: michaelW on Feb 19, 2013 Sorry, i have no weblink. However, my answers are from my textbook, so the key words are more or less there.
Carbohydrates: Carbohydrate digestion occurs in the mouth and the small intestine only. The end-products of carbohydrate digestion are monosaccharides. (Glucose, galatose and fructose) In the mouth, salivary amylase breaks starch down to maltose. In the small intestine, pancreatic amylase breaks down starch into maltose and maltase breaks down maltose to glucose. Lactase breaks down lactose into glucose and galatose. Sucrase breaks down sucrose to glucose and fructose. Proteins: In the small intestine, trypsin and erepsin act on the undigested proteins in the chyme. Enterokinase makes trypsinogen(inactive) to an active form. (Trypsin) Therefore, trypsin breaks proteins down to polypeptides and erepsin breaks polypeptides down to amino acids. The end products of protein digestion are amino acid. Fats: Fat digestion occurs in the stomach only. Bile salts emulsify fats into tiny droplets and this increases the surface area to volume ratio of the fats. The droplets of fats are then acted upon by pancreatic and intestinal lipases, which digest them into the end-poidects fatty acids and glycerol. |