Key fact Digestion is the breakdown of large, insoluble molecules into small, soluble molecules, so that they can be absorbed into the bloodstream. It is carried out by the digestive system.

The apparatus used to model absorption in the small intestine can be set up like this. At regular intervals the liquid inside and outside of the Visking tubing is sampled and tested for starch ...

The digestive system is the series of tubelike organs that convert our meals into body fuel. There are about 30 feet (9 meters) of these convoluted pipeworks, starting with the mouth and ending ...

Understanding how the digestion process influences and alters the composition and structure of food is essential for food ...

“Later, when humans began consuming more starch-rich foods, there was an adaptive pressure to select individuals who had higher AMY1 copy numbers, as they could more effectively process starchy foods.