The aim of this lecture is to present on Digestion- Foundation Level. This is a tutorial-study based lecture. Digestion is important for breaking down food into nutrients, which the body uses for energy, growth, and cell repair. Food is absorbed (taken in) to the body in the small intestine. The wall of the small intestine has small holes in it. Here also briefly present on Digestive Enzymes; what factors affect the rate of reaction of enzymes. Finally focus on amylase and starch investigation.