what is a lac?
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Lac Lac is the scarlet resinous secretion of a number of species of lac insects, of which the most commonly cultivated species is Kerria lacca.Cultivation begins when a farmer gets a stick (broodlac) that contains eggs ready to hatch and ties it to the tree to be infested.ac for dye has been somewhat replaced by the emergence of synthetic dyes, though it remains in use, and some juices, carbonated drinks, wine, jam, sauce, and candy are colored using it. Lac is used in folk medicine as a hepatoprotective and anti-obesity drug.
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Lactulose General Description. Lactulose is a synthetic sugar that combines fructose and galactose. It is typically used as a laxative. It is sometimes used for pets with liver disease and enlarged livers (hepatic encephalopathy), though there is some controversy on it’s effectiveness in treating these disorders.actulose is a synthetic sugar that combines fructose and galactose. It is typically used as a laxative.
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What is Lactase? Lactase is an enzyme that breaks down lactose, the main sugar in milk. It's produced in different ways by many different types of organisms, but in humans, it's made by the cells lining the small intestines. Most people are born producing it, but often make less of it as they age, which causes lactose intolerance.
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Liquid flow meter proving and LACT units Lease automated custody transfer (LACT) units. LACT units are designed for unattended custody transfer of crude oil from a seller to a buyer. The LACT design is determined by: Flow rate; Operating pressure; Gravity; Temperature of the oil; Minimum pressure drop through the piping and components is desirable.
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Lactose Lactose is a disaccharide derived from the condensation of galactose and glucose, which form a β-1→4 glycosidic linkage.Its systematic name is β-.actose is a disaccharide derived from the condensation of galactose and glucose, which form a β-1→4 glycosidic linkage. Its systematic name is β-.
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LAC+USC Medical Center LAC+USC Medical Center. Los Angeles County+USC Medical Center, also known as County/USC, by the abbreviation LAC+USC, or by the name Los Angeles County General, is a 600-bed public teaching hospital located at 2051 Marengo Street in the Boyle Heights neighborhood of Los Angeles, California.
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Boating Terms. LACING A method of attaching something, such as a sail to a spar, with a continuous line. LAID UP A boat which has been temporally put out of commission. LAND BREEZE A movement of air from the land to the water due to temperature differences.
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- In medicine, LAC stands for several things. One thing it stands for is Long-Arm Cast. Another thing it stands for is Laceration. LAc can stand for licensed acupuncturist. Left … AnteCubital, referring to the site for a peripheral IV (a needle and line for fluids inserted into the vein of the forearm).
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Languages Across the Curriculum Languages Across the Curriculum (LAC) provides an avenue for students to apply their language skills in fields not traditionally the focus of modern language department curricula.
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An Introduction to Molecular Biology/Gene Expression The lac operon is an operon, or group of genes with a single promoter (transcribed as a single mRNA). The genes in the operon encode proteins that allow the bacteria to use lactose as an energy source.
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- lacuna definition, lacuna meaning | English dictionary. Search also in: Web News Encyclopedia Images. lacuna. n pl , -nae , -nas. 1 a gap or space, esp. in a book or manuscript. 2 (Biology) a cavity or depression, such as any of the spaces in the matrix of bone. 3 another name for → coffer → 3. (C17: from Latin lacuna pool, cavity, from lacus lake) ♦ lacunose, lacunal, lacunary adj.
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Definition of 'lacuna' Definition of 'lacuna'. lacuna (ləkjuːnə ) If you say that there is a lacuna in something such as a document or a person's argument, you mean that it does not deal with an important issue and is therefore not effective or convincing. There are still major lacunae in the material available.
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Lactose Intolerance Lactose is a sugar found in milk. It cannot become absorbed by the body unless is gets changed into more simple sugars called glucose and galactose. This change happens when the lactose passes through the stomach into the upper part of the gut (small intestine) and comes into contact with a chemical called lactase.
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lacuna A lacuna is a gap or missing part. If you complain that there's a major lacuna in the bake sale, the lack of brownies is probably to blame. The noun lacuna means an empty space or a hole where something should be. It's used a lot to talk about missing parts of books or manuscripts, either because lost pages have created a lacuna, or because censors have blacked out or removed parts of them.
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Lac Lac tubes created by Kerria lacca. Resin secreted by the female lac bug on trees is processed and sold as dry flakes. Lac is the scarlet resinous secretion of a number of species of lac insects, of which the most commonly cultivated species is Kerria lacca. Cultivation begins when a farmer gets a stick (broodlac) that contains eggs ready to hatch and ties it to the tree to be infested.
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- The lac-operon is actually a series of adjacent genes and regulatory elements in one small part of the E. coli circular chromosome. Lac-Operon components Definitions: P strands for promoter; it is the site where RNA polymerase attaches in order to transcribe mRNA.hen the copies created heterozyous cells (I + , I -) normal regulation was observed. This indicated that the I gene codes for something that can move and interact with the operators of both copies of the lac-operon present in these cells.
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Fond du Lac Indian Reservation The Fond du Lac Indian Reservation (or Nah-Gah-Chi-Wa-Nong (Nagaajiwanaang in the Double Vowel orthography), meaning Where the current is blocked in the Ojibwe language) is an Indian reservation in northern Minnesota near Cloquet in Carlton and Saint Louis counties.
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- LACU @LACUPGH. LACU is a volunteer-based non-profit organization in Pittsburgh, that promotes, preserves and enriches the Latin American and Caribbean cultures. Pittsburgh, PA. lacunet.org.
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- Lactase is an enzyme that breaks down lactose, the main sugar in milk. It's produced in different ways by many different types of organisms, but in humans, it's made by the cells lining the small intestines.
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Lacunar stroke Lacunar stroke or lacunar infarct (LACI) is a type of stroke that results from occlusion of one of the penetrating arteries that provides blood to the brain's deep structures.
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What Is Anhydrous Lactose? Lactose is a kind of sugar found naturally in dairy products such as milk, cheese and cream. Lactose consists of two different sugars: glucose and galactose, which are chemically linked together. Anhydrous lactose is lactose that has no water in it. To make anhydrous lactose, lactose is dried at very high temperatures on a device known as a roller dryer. This helps remove all water molecules and crystals.
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What Is Lactulose (Generlac and Enulose)? The drug lactulose has several brand names, including Generlac and Enulose, and is used to treat constipation.Lactulose is a type of sugar that is broken down in the large intestine into mild acids that draw water into the colon.Doctors also prescribe the medicine to reduce the amount of ammonia in the blood of people with liver disease.actulose is a type of sugar that is broken down in the large intestine into mild acids that draw water into the colon.
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- Lactose is a disaccharide sugar composed of galactose and glucose that is found in milk. Lactose makes up around 2–8% of milk (by weight), although the amount varies among species and individuals, and milk with a reduced amount of lactose also exists. It can be extracted from sweet or sour whey.
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lac operon lac operon (lactose operon) is an operon required for the transport and metabolism of lactose in Escherichia coli and many other enteric bacteria. Although glucose is the preferred carbon source for most bacteria, the lac operon allows for the effective digestion of lactose when glucose is not available.
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Bio 13 The lac repressor is a protein that represses (inhibits) transcription of the lac operon. It does this by binding to the operator, which partially overlaps with the promoter. When bound, the lac repressor gets in RNA polymerase's way and keeps it from transcribing the operon.
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Lactone A lactone is a cyclic ester in organic chemistry. It is the condensation product of an alcohol group and a carboxylic acid group in the same molecule.ydrolysis. Heating a lactone with a base (sodium hydroxide) will hydrolyse the lactone to its parent compound, the straight chained bifunctional compound. Like straight-chained esters, the hydrolysis-condensation reaction of lactones is a reversible reaction, with an equilibrium.