There is a huge variety of different lipids and the chemical structure varies between each of them. They provide high energy and perform three important biological functions in the body: to provide structure to cell membranes, to store energy, and to function as signaling molecules. Lipids are fatty, waxlike molecules found in the human body and other organisms. Fatty Acid Structure. Lipids are insoluble organic compounds that consist of fat and oil. a chain of carbon and hydrogen atoms) with an acidic end. Sphingolipids: They are lipids having amino alcohol sphingosine. There are different types of lipids. Lipids are often distinguished from another commonly used word, fats. Lipids, also known as fats, play many important roles in your body, from providing energy to producing hormones. The chemical composition of these molecules includes hydrogen, carbon, and oxygen. The polar or hydrophilic heads of molecules form the two surfaces which are in contact with water. In relation to diet, lipids are thought of as fats that add calories and impact weight and health. Lipid: Type # 6. Lipid bilayer is the basic component of all cell membranes. Glycerol Structure. Examples of Lipids. Building Blocks of Lipids: Living organisms are made of biomolecules (biological molecules) that are essential for performing physiological functions: carbohydrates, proteins, lipids, and nucleic acids.These molecules vary in size, structure, properties, and functions in and among cells. All lipids do however contain at least one hydrocarbon chain (i.e. Elements found in Lipids. Lipids, according to biology, are a category molecules whose main feature is insolubility, or inability to mix with water. Where most polymers are long chains of identical, repeating carbon-containing molecules known as monomers, lipid polymers contain an additional, nonidentical molecule attached to each monomer chain. 1. long-term energy storage 2. act as structural components of cell membranes 3. provide insulation. Lipids may originate from animals or plants, or be created synthetically. Because of this, it is difficult to outline a general structure of a lipid. fats, oils, waxes. What Are Lipids Used for in the Body?. The hydrophobic or nonpolar tails of the phospholipid molecules are towards the centre of the bilayer. Figure: Examples saponifiable and nonsaponifiable lipids. I will use the lipid and fat synonymously. Structure of lipids. You wouldn't be able to digest and absorb food properly without lipids. Some examples of lipids include butter, ghee, vegetable oil, cheese, cholesterol and other steroids, waxes, phospholipids, and fat-soluble vitamins. Examples of phospholipids include phosphatidylethanolamine, phosphatidylinositol, phosphatidylserine, lecithin, plasmalogens and sphingomyelins. Examples are cerebrosides and gangliosides. A sphingolipid is a lipid made up of a sphingoid base (e.g. long hydrocarbon (hydrogen and carbon) chains. sphingosine and ceramides) backbone and sugar residue(s) linked by a glycosidic bond. Mostly Carbon (C), Hydrogen (H), and some Oxygen (O) Functions of Lipids. Generally, their structures dictate their biological function. The Three Classifications of Lipids Found in Food and in the Human Body. Lipids create a unique type of polymer, known for being a key component of cell membranes and hormones. This category includes fatty acids, triglycerides, and fats. They include fats and oils, cholesterol and some other substances. Lipids are organic compounds not soluble in water. All these compounds have similar features, i.e. Examples of Lipids. 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