BIOL 205 Study Guide - Final Guide: Gastrointestinal Tract, Gastric Acid, Pancreatic Juice
29 Feb 2016
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Lecture 6: capture, ingestion, digestion and absorption of. Food in animals: nutritional requirements obtained from food. All animal obtain food by eating plants (directly) or by eating animals who eat plants (indirect) complex food requirements. Simple sugars (glucose) used to obtain e or to store it as glycogen. Lipids synthetize cellular membrane or source of metabolic e. Inorganics salts synthesis of nucleic acids + osmoregulation. Not every chemical element = essential in animal nutrition. Biological evolution = continuity of chemical evolution certain chemical elements were selected to build up prebiotics systems and biological systems were built from it. Animals require them in various proportions some can be needed to some species and not to others. Essential nutrients = nutrients that cannot be produced by the organism vitamins and some aa: feeding methods. Unicellular organism take up food by surface absorption food has to be in molecular form. Is produced by death and decay of other life form.
