NFS 220 Study Guide - Midterm Guide: Saturated Fat, Adipose Tissue, Triglyceride
3 Feb 2019
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Fat cells enlarge and supply 60% of body"s ongoing energy at rest. Phospholipids and sterols maintain structure and health of cells. Composed of 3 fatty acids and attached to a glycerol backbone. Saturated fatty acids = every carbon is filled with hydrogen. Unsaturated- some hydrogens are missing at points of unsaturation. 2 or more points of unsaturation = polyunsaturated. Soft fat- shorter chains and more unsaturated. Polyunsaturated fatty acids spoil most readily due to unstable double bonds. Advantages- prolongs shelf-life and alters texture of foods (makes fats harder) Disadvantages- health effect of unsaturation is lost and trans-fatty acids are formed. Hydrogens are on the same side of the carbon chain. Hydrogens are on the opposite sides of the carbon chains. Helps with blood pressure, clot formation, blood lipid concentration, immune/inflammatory responses, and structural components of cell membranes. Found in seeds of plants and in oils from the seeds (vegetable oils, seeds, nuts, whole grain foods)
