BIOB34H3 Lecture Notes - Globules Of Fat, Bile Acid, Glycosidic Bond
Document Summary
Digestion is animal-mediated, if you leave food somewhere and it decomposes without being mediated by an animal, it"s not considered digestion: breakdown of food molecules into smaller chemicals. Hydrolytic digestion uses water to break chemical bonds by enzymes produced by the animal (hydrolysis) Fermentative digestion involves microbes for example cows harbor microbial symbionts in several regions of their gut which aid the digestion of their food. Extracellular digestion occurs in an extracellular body cavity (e. g. , gut lumen) most animals: outside the cells. Intracellular digestion involves taking food particles into specialized cells via phagocytosis prior to digestion sponges, coelenterates , flatworms, some molluscs. Example of intracellular digestion includes the sponge, which uses choanocyte to catch the food, then passes it to amoebocyte where digestion takes place. An example that uses intracellular and extracellular digestion is the flatworm. Flatworms carry out some amount of extracellular digestion.
