GCSE Science/Digestion

Since most of our digestive enzymes are water-based, how does the body break down fat and make it available for the various functions it must perform in the human body? Digestive system Metabolism. Secretory Mechanisms and Role in Pathogenesis. Namespaces Article Talk. Help a Public School. Beginning in the endoplasmic reticulum and continuing in the Golgi, triglyceride is packaged with cholesterol, lipoproteins and other lipids into particles called chylomicrons. Lipase digests each triglyceride into its three individual fatty acids plus a glycerol molecule.

A Molecular Approach , 2nd ed. This allows efficient transportation to the intestinal microvillus. In humans, Entamoeba histolytica can phagocytose red blood cells. Annu Rev Microbiol. A crop , or croup, is a thin-walled expanded portion of the alimentary tract used for the storage of food prior to digestion. Also inside the mouth, amylase for digesting starch can be found, produced by the salivary glands.

When they are born, their intestines do not contain these bacteria they are completely sterile. Upon receipt of these substances the energy-hungry cells break them down further into tiny fragments. Saliva Gastric acid.

Nature Reviews Microbiology. Without them, they would be unable to get any nutritional value from many plant components.

Intestinal lipid absorption. Creative Commons supports free culture from music to education. Retrieved CS1 maint: Intestinal juice.

Lipid digestion: steps, enzymes and products

After the B 12 -haptocorrin complexes pass from the stomach via the pylorus to the duodenum, pancreatic proteases cleave haptocorrin from the B 12 molecules which rebind to intrinsic factor IF. This section needs expansion with: Digestion is the process in which your body decreases the size of the food particles you eat until they are small enough to be absorbed. Berdanier C. The vesicles fuse with the plasma membrane and undergo exocytosis, dumping the chylomicrons into the space outside the cells.