Triglyceride | Fatty Acids, Lipids, Cholesterol | Britannica
2024年11月22日 · Triglycerides are esters in which three molecules of one or more different fatty acids are linked to the alcohol glycerol; they are named according to the fatty acid components; e.g., tristearin contains three molecules of stearic acid, and oleodistearin, one of oleic acid and two of stearic acid.
Lipid | Definition, Structure, Examples, Functions, Types, & Facts ...
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 - Digestion, Fatty Acids, Diet | Britannica
5 天之前 · Lipid - Digestion, Fatty Acids, Diet: The main source of fatty acids in the diet is triglycerides, generically called fats. In humans, fat constitutes an important part of the diet, and in some countries it can contribute as much as 45 percent of energy intake.
Lipid - Membrane, Structure, Function | Britannica
Lipid - Membrane, Structure, Function: One of the most surprising characteristics of biological membranes is the fact that both the lipid and the protein molecules, like molecules in any viscous liquid, are constantly in motion.
Lipid - Structure, Function, Types | Britannica
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.
Lipid - Fats, Oils, Phospholipids | Britannica
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).
Fatty acid | Definition, Structure, Functions, Properties, & Examples ...
2024年11月25日 · 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.”
Simple triglyceride | chemical compound | Britannica
Simple triglycerides are those in which each molecule of glycerol is combined with three molecules of one acid—e.g., tripalmitin, C 3 H 5 (OCOC 1 5 H 3 1) 3, the glyceryl ester of palmitic acid, C 1 5 H 3 1 COOH. Only a few of the glycerides occurring in nature are of the simple type; most are mixed triglycerides…
Lipid - Fatty Acids, Esters, Alcohols | Britannica
Lipid - Fatty Acids, Esters, Alcohols: In addition to the very common fatty acids with straight saturated or unsaturated acyl chains, many fatty acids are chemically modified by substituents on the hydrocarbon chain.
Lipid - Apolipoproteins, Functions, Recycling | Britannica
5 天之前 · Lipid - Apolipoproteins, Functions, Recycling: The nine classes of apoproteins listed in the table are synthesized in the mucosal cells of the intestine and in the liver, with the liver accounting for about 80 percent of production. Chylomicrons are …