AP BIOLOGY

Detailed explanation-1: -Absorption. The simple molecules that result from chemical digestion pass through cell membranes of the lining in the small intestine into the blood or lymph capillaries. This process is called absorption.

Detailed explanation-2: -Food moves through your GI tract by a process called peristalsis. The large, hollow organs of your GI tract contain a layer of muscle that enables their walls to move. The movement pushes food and liquid through your GI tract and mixes the contents within each organ.

Detailed explanation-3: -There are 4 steps to digestion: Eat food. Break down the food into tiny pieces. Absorb nutrition into the body: move the small particles out of the digestive system and the rest of the body. Get rid of the waste, which is anything your body can’t use.

Detailed explanation-4: -Absorption is the movement of molecules out of the digestive tract and into the circulation or into the lymphatic system. The mechanism by which absorption occurs depends on the type of molecule involved . Molecules pass out of the digestive tract by simple diffusion, facilitated diffusion, active transport.

Detailed explanation-5: -Absorption is the process of taking simple molecules created as a result of digestion from the intestinal cavity into the body (bloodstream/lymph). Assimilation, on the other hand, is the process of forming new compounds from absorbed molecules, which are required for regular cell function or energy production.