T he F our M ajor G roups of O rganic C ompounds: C arbohydrates, L ipids, P roteins, and N ucleic A cids; and T heir F unctions in L iving S ystems. C arbon a M ost V ersatile A tom. -The Carbon atom has 6 protons 6 neutrons 6 electrons
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The Four Major Groups of Organic Compounds: Carbohydrates, Lipids, Proteins, and Nucleic Acids; and Their Functions in Living Systems
Carbon Skeletons Vary
fatty acids, steroids,
phospholipids, and waxes.
. A steroid’s structure is composed of carbon rings.
. Steroids serve as the structural components of many hormones, such as
estrogen and testosterone.
. Steroids are essential for maintaining the fluidity of cell membranes.
. Diets rich in saturated fats promote accumulation of LDL “bad cholesterol” in the wall of arteries, reducing blood flow and promoting hypertension and the incidence of strokes.