BSC 2011 Chapter Notes - Chapter 41: Gastric Glands, Animal Nutrition, Gastrointestinal Tract
Document Summary
Herbivores: eat mainly on plants or algae. 41. 1 an animal"s diet must supply chemical energy, organic molecules, and essential nutrients. Adequate diet must satisfy three nutritional needs: chemical energy for cellular processes, organic building blocks for macromolecules, essential nutrients. Activities of cells, tissues, organs, and animals depend on sources of chemical energy in the diet: energy used to produce atp, powers processes like dna replication, cell division, vision and flight, animals ingest and digest nutrients. Some cellular processes require materials that an animal cannot make from simple organic precursors. Include essential amino acids and fatty acids, vitamins, and minerals: key functions in cells. Serving as substrates of enzymes, as coenzymes, and as cofactors in biosynthetic reactions. Essential amino acids: animals require 20 amino acids to make proteins, most animal species have the enzymes to synthesize about half of these amino acids.