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- Dictionarylip·id/ˈlipəd/
noun
- 1. any of a class of organic compounds that are fatty acids or their derivatives and are insoluble in water but soluble in organic solvents. They include many natural oils, waxes, and steroids.
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Sep 20, 2024 · lipid structure Structure and properties of two representative lipids. Both stearic acid (a fatty acid) and phosphatidylcholine (a phospholipid) are composed of chemical groups that form polar “heads” and nonpolar “tails.”
lipid , Any of a diverse group of organic compounds that are grouped together because they do not interact appreciably with water. One of the three large classes of substances in foods and living cells, lipids contain more than twice as much energy (calories) per unit of weight as the other two (proteins and carbohydrates).
Sep 20, 2024 · Lipid - Structure, Function, Types: Biological membranes separate the cell from its environment and compartmentalize the cell interior. The various membranes playing these vital roles are composed of roughly equal weight percent protein and lipid, with carbohydrates constituting less than 10 percent in a few membranes.
Sep 10, 2024 · Biomolecule, any of numerous substances that are produced by cells and living organisms. Biomolecules have a wide range of sizes and structures and perform a vast array of functions. The four major types of biomolecules are carbohydrates, lipids, nucleic acids, and proteins.
Sep 20, 2024 · Lipid - Fats, Oils, Phospholipids: There are four major classes of circulating lipoproteins, each with its own characteristic protein and lipid composition. They are chylomicrons, very low-density lipoproteins (VLDL), low-density lipoproteins (LDL), and high-density lipoproteins (HDL).
Sep 2, 2024 · Fatty acid, important component of lipids in plants, animals, and microorganisms. Generally, a fatty acid consists of a straight chain of an even number of carbon atoms, with hydrogen atoms along the length of the chain and at one end of the chain and a carboxyl group (—COOH) at the other end.
Sep 20, 2024 · Lipid - Waxes, Fatty Acids, Esters: A second group of neutral lipids that are of physiological importance, though they are a minor component of biological systems, are waxes. Essentially, waxes consist of a long-chain fatty acid linked through an ester oxygen to a long-chain alcohol.
Sep 20, 2024 · Lipid - Saturated Fatty Acids: The simplest fatty acids are unbranched, linear chains of CH2 groups linked by carbon-carbon single bonds with one terminal carboxylic acid group. The term saturated indicates that the maximum possible number of hydrogen atoms are bonded to each carbon in the molecule.
Sep 10, 2024 · Although a number of classification schemes have been devised for carbohydrates, the division into four major groups— monosaccharides, disaccharides, oligosaccharides, and polysaccharides —used here is among the most common. Most monosaccharides, or simple sugars, are found in grapes, other fruits, and honey.
Aug 26, 2024 · The phospholipids, with the sphingolipids, the glycolipids, and the lipoproteins, are called complex lipids, as distinguished from the simple lipids (fats and waxes) and from other fat-soluble cell components, mostly isoprenoids and steroids.
