NUTR 222 Study Guide - Midterm Guide: Inositol, Underweight, Bioavailability
Document Summary
Chemical make up: c, h, o, n. 20 known types, 9 of which are essential. Amine group + acid group + backbone. Each has different side chain attached to backbone. Healthy adults only need 9 amino acids. Different situations can cause other amino acids to be essential. Each unique order/type of amino acids = unique function protein carries out. Complex and fragile (change in one amino acid can cause sickle cell anemia!) Turnover - constantly being made and broken down. Time of growth - more protein required. Balance (equilibrium) - n in = n out; healthy. Positive n in > n out; during time of growth. Negative n out > n in; unhealthy; during fasting/starvation or trauma. Muscle, bone, teeth, tendons, cartilage, blood vessels. Put molecules together to create compound; destruct molecule to create 2 compounds; chemically change to create new compound. Despite all this change, the protein itself (enzyme) never changes! Move in/out of cells; move around cells.
