Best Answer: Probably the same as any other major... probably even shorter than some (such as pre-med), so 4 years. For my school, you need Intro, Research Methods ...
Digestion of foods in the small intestine. The small intestine continues the process of digestion and various enzymes are present there to break starches down further. These enzymes are called disaccharidases. The best known is lactase, which is the enzyme necessary to digest milk sugar. This enzyme is normally present in all young mammals who need this to digest mother's breast milk. With age and as breast feeding finishes, production of this enzyme ceases for life.
Lactase is an enzyme that breaks down lactose, the main sugar in milk. It's produced in different ways by many different types of organisms, but in humans, it's made by the cells lining the small intestines. Most people are born producing it, but often make less of it as they age, which causes lactose intolerance.