Enzymes and digestion

Chemical Digestion

• The purpose of digestion is to break down large, insoluble molecules into smaller, soluble molecules that can be absorbed into the bloodstream
• Large insoluble molecules, such as starch and proteins, are made from chains of smaller molecules that are held together by chemical bonds. These bonds need to be broken
• Enzymes are biological catalysts – they speed up chemical reactions without themselves being used up or changed in the reaction
• There are three main types of digestive enzymes – …