BIO 126 Chapter Notes - Chapter 33: Gastrovascular Cavity, Gastrointestinal Tract, Pylorus

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Every organism requires food to keep living, for growth and repair and repair. Nutrient any substance consumed by an animal that is needed for survival, growth, development, tissue repair, or reproduction. Ingested organic macromolecules are used for two general purposes. To provide energy- used in synthesis of atp. All animals require the same fundamental organic macromolecules. These structures depend on how the organism take in food and how it digests food. Birds have a gizzard and a crop to allow them to quickly collect their food and hence avoid being exposed to predators for an extended period. However, all animals need the same building blocks to survive but the sources from which they get these macromolecules differs. Microorganisms are an unavoidable part of our diet. Essential nutrients are those nutrients that cannot be synthesized from simpler compounds inside the animal"s body. Thus, these nutrients have to be obtained through their diet.