cholesterol definition chemistry
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What is Cholesterol? - Definition & Overview Definition. Cholesterol is a waxy type of lipid, a substance that is insoluble in water, like oil or fat. Specifically, cholesterol is a type of fat that is made up of four interlocked rings of carbon called a steroid.We know steroids from watching sports, but not all steroids are responsible for building our muscles.t uses sunlight to start a cascade of chemical reactions that break down cholesterol and use the parts to make the vitamin. Without cholesterol, you could stand out in the sun all day and still not make enough vitamin D for your body. Cholesterol is also an important component of our cell membranes.
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HDL cholesterol: How to boost your 'good' cholesterol Understanding HDL cholesterol. Cholesterol is a waxy substance that's found in all of your cells and has several useful functions, including helping to build your body's cells. It's carried through your bloodstream attached to proteins. These proteins are called lipoproteins. 1  Low-density lipoproteins.
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What Is the Function of Cholesterol in the Body? Cholesterol is a structural component of cells. Cholesterol along with polar lipids make up the structure of each and every cell in our bodies. Cholesterol is there to basically provide a protective barrier.ost people think of cholesterol in a negative way. However, cholesterol actually plays a very important role in the functioning of the body. According to The Mayo Clinic, cholesterol is found in every cell in our body and without it our bodies would not function properly.
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Cholesterol Cholesterol is also the precursor from which the body synthesizes vitamin D. One of the major uses of cholesterol is the synthesis of bile acids. These are synthesized in the liver from cholesterol and are secreted in the bile.
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- Introduction. Cholesterol is a fatty substance known as a lipid and is vital for the normal functioning of the body. It's mainly made by the liver, but can also be found in some foods.Having an excessively high level of lipids in your blood (hyperlipidemia) can have an effect on your health.holesterol is not an alcohol. Cholesterol is a sterol (a combination steroid and alcohol) and a lipid found in the cell membranes of all body tissues, and transported in the blood plasma of all animals. Lesser amounts of cholesterol are also found in plant membranes.
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Chapter 05 - The Structure and Function of Macromolecules Steroids are lipids with a carbon skeleton consisting of four fused rings. 1  Different steroids are created by varying functional groups attached to the rings. 2  Cholesterol, an important steroid, is a component in animal cell membranes. 3  Cholesterol is also the precursor from which all other steroids are synthesized.
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Cholesterol In addition to its importance within cells, cholesterol also serves as a precursor for the biosynthesis of steroid hormones, bile acids, and vitamin D. Cholesterol is the principal sterol synthesized by animals.
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cholesterol A 27-carbon precursor of steroid hormones and bile acids which is an integral component of cell membranes and plasma lipoproteins; it is a precursor of bile acids and important in the synthesis of steroid hormones.
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cholesterol LDL cholesterol-the cholesterol in low-density lipoproteins; the `bad' cholesterol; a high level in the blood is thought to be related to various pathogenic conditions.
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- A fat, most often of animal origin, having chains of saturated fatty acids. An excess of these fats in the diet is thought to raise the cholesterol level in the bloodstream. saturated fat. A fat with a triglyceride molecule containing three saturated fatty acids. All carbon atoms in the fatty acid chains of saturated fats are connected by single bonds.
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Lipid Lipid: Lipid, any of a diverse group of organic compounds including fats, oils, hormones, and certain components of membranes that are grouped together because they do not interact appreciably with water. One type of lipid, the triglycerides, is sequestered as fat in adipose cells, which serve as the
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Cholesterol's Hydroxyl Group This makes cholesterol an example of an amphipathic molecule — part water-soluble, part water-insoluble. The picture below demonstrates this property. In the picture above, the water molecules form a cage around the polar hydroxyl group. When you dissolve sugar in water, each sugar molecule is bound up in a similar cage, surrounded by a cluster of water molecules. But most of the cholesterol molecule has no attraction to the water.
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- Cholesterol is a fatty substance that is used by the body to make cell membranes, hormones, and other substances. We get cholesterol from two sources: 1) our own bodies (it is produced primarily in the liver), and 2) by eating animal products such as meat (beef, chicken, fish), egg yolks, cheese and other whole milk products.
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Nutrition Glossary Cholesterol is a waxy, fat-like substance found in the walls of cells. in all parts of the body, from the nervous system to the liver to the. heart. The body uses cholesterol to make hormones, bile acids, vitamin D, and other substances. The body makes all the cholesterol it needs. Cholesterol circulates.
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- But, triglycerides are fats; cholesterol is not. Cholesterol is a waxy, odorless substance made by the liver that is an essential part of cell walls and nerves. Cholesterol also plays an important role in body functions such as digestion and hormone production.
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Lipids important to the body Cholesterol is a type of lipid (fat). Lipids are substances that do not dissolve in water but are soluble in organic solvents such as chloroform or dry cleaning fluids. Other important types of lipid include triglycerides and fatty acids.
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The Curious Tale of King Seqenenre Tao 'Seqenenre Tao,' the father says, leaning over the glass. The mother shuffles closer and the child covers her eyes; a single brown eye peeks out from behind tiny fingers. 'the guidebook says that Tao means the brave.' Unsurprisingly, this particular mummy was generating a fair amount of attention.
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Macromolecules Lipid: Another word for fat. (Please see the various meanings of fat.) A lipid is chemically defined as a substance that is insoluble in water and soluble in alcohol, ether, and chloroform. Lipids are an important component of living cells. Together with carbohydrates and proteins, lipids are the main constituents of plant and animal cells.
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Cholesterol Animal fats are complex mixtures of triglycerides, with lesser amounts of phospholipids and cholesterol. As a consequence, all foods containing animal fat contain cholesterol to varying extents. Major dietary sources of cholesterol include cheese, egg yolks, beef, pork, poultry, fish, and shrimp.Human breast milk also contains significant quantities of cholesterol.n addition to its importance within cells, cholesterol also serves as a precursor for the biosynthesis of steroid hormones, bile acids, and vitamin D. Cholesterol is the principal sterol synthesized by animals.
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- n. Any of a group of organic compounds, including the fats, oils, waxes, sterols, and triglycerides, that are insoluble in water but soluble in common organic solvents, are oily to the touch, and together with carbohydrates and proteins constitute the principal structural material of living cells.lip·id′ic adj.. Any of a group of organic compounds, including the fats, oils, waxes, sterols, and triglycerides, that are insoluble in water but soluble in common organic solvents, are oily to the touch, and together with carbohydrates and proteins constitute the principal structural material of living cells. lip·id′ic adj.
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A Guide to Total Cholesterol Updated April 07, 2017. Total cholesterol is the total amount of cholesterol in your blood. Your total cholesterol includes low-density lipoprotein (LDL, or “bad”) cholesterol and high-density lipoprotein (HDL, or “good”) cholesterol. Cholesterol is a waxy, fat-like substance found in every cell in your body.
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lipid n. Any of a group of organic compounds, including the fats, oils, waxes, sterols, and triglycerides, that are insoluble in water but soluble in common organic solvents, are oily to the touch, and together with carbohydrates and proteins constitute the principal structural material of living cells.lip·id′ic adj.ny of a group of organic compounds, including the fats, oils, waxes, sterols, and triglycerides, that are insoluble in water but soluble in common organic solvents, are oily to the touch, and together with carbohydrates and proteins constitute the principal structural material of living cells. lip·id′ic adj.
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- Cholesterol is a lipid with a unique structure consisting of four linked hydrocarbon rings forming the bulky steroid structure. There is a hydrocarbon tail linked to one end of the steroid and a hydroxyl group linked to the other end.teroid, as a cholesterol, is one of the most basic lipids and consists of multiple rings of connected atoms such as hexagons and pentagon. Some examples of steroids are vitamin D, estrogen, and cortison, which are molecules that are critical for keeping the body running smoothly.
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Hypercholesterolemia Hypercholesterolemia is a condition characterized by very high levels of cholesterol in the blood. Cholesterol is a waxy, fat-like substance that is produced in the body and obtained from foods that come from animals (particularly egg yolks, meat, poultry, fish, and dairy products).
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Structural Biochemistry/Lipids Structural Biochemistry/Lipids. Lipids belong to a family of organic compounds which includes fats, oils, waxes, cholesterol, phospholipids, steroids, and fat-soluble vitamins (A, D, E, and K). They are formed by either or both carbanion-based condensation of thioesters and carbocation-based condensation of isoprene units.