Monosaccharides (mono- = "one"; sacchar- = "sweet") are simple sugars. monosaccharide meaning. monosaccharide The simplest form of sugar. Monosaccharide Introduction. Picture 1. Found insideThe dictionary also contains tables of important health and medical terms to further illustrate key ideas. This user-friendly volume is an indispensable resource to anyone who wants to speak and understand the language of health education. Any of the class of sugars (e.g., glucose) that cannot be hydrolyzed to give a simpler sugar. Overview of Monosaccharides. Sucrose is the scientific name for table sugar. Monosaccharide or simple (single) sugars: General chemical formula- C 6 H 1 2 O 6 They do not require digestion and are absorbed into the body. 'pa pdd chac-sb tc-bd bw hbr-20 hbss lpt-25' : 'hdn'">, Clear explanations of natural written and spoken English. 'Simple sugars, the monosaccharides and disaccharides, are very easy for human bodies to use as a source of energy.'. The above definition of sugar needs some further . Found inside – Page 570... with Their Proper Pronunciation, Derivation, and Definition George Milbry ... precocious development . monosaccharide ( mon - o - sak ' - ar - id ) . Monosaccharides can be classified by the number x of carbon atoms they contain: diose (2) triose (3) tetrose (4), pentose (5), hexose (6), heptose (7), and so on.. With over 50,000 distinct species in sub-Saharan Africa alone, the African continent is endowed with an enormous wealth of plant resources. Oligosaccharides synonyms, Oligosaccharides pronunciation, Oligosaccharides translation, English dictionary definition of Oligosaccharides. Found inside – Page 1For instance monosaccharide means a one-unit saccharide. ... For reasons of pronunciation, some carboxyl groups require the -oic or -oate suffixes, ... The word in the example sentence does not match the entry word. Medical Definition of Monosaccharides. 1. monosaccharide [n] - See also: monosaccharide. Linear molecules, like cellulose and chitin, are strong and rigid. Add ${headword} to one of your lists below, or create a new one. (English pronunciations of monosaccharide from the Cambridge Advanced Learner's Dictionary & Thesaurus and from the Cambridge Academic Content Dictionary, both sources © Cambridge University Press), I wouldn’t trust them an inch: talking about people you don’t trust. The carbon backbone in monosaccharides usually consists of 3 - 6 carbon atoms. Monosaccharides are the simplest carbohydrates. The general formula for a carbohydrate can be written as C x (H 2 O) y.; They act as the source of energy (e.g. Disaccharide, also called double sugar, any substance that is composed of two molecules of simple sugars (monosaccharides) linked to each other.Disaccharides are crystalline water-soluble compounds.The monosaccharides within them are linked by a glycosidic bond (or glycosidic linkage), the position of which may be designated α- or β- or a combination of the two (α-,β-). You've got the pronunciation of Monosaccharide right. Meaning and Definition of monosaccharide. Structure and nomenclature. Carbohydrates are molecules that contain carbon, hydrogen, and oxygen. Pronunciation of Monosaccharide with 4 audio pronunciations, 6 synonyms, 1 meaning, 13 translations and more for Monosaccharide. Monosaccharide or simple sugars are any of the basic compounds that serve as the building blocks of carbohydrates. This reaction can be used for disaccharides, but the reaction would be very slow. | Meaning, pronunciation, translations and examples The sugars in our food belong to two major category. Oligosaccharide. Oops! cellulose in plants and chitins . : On utilise notamment une carboxyméthylinuline ou une dicarboxyinuline contenant 0,5 à 2,0 groupes carboxyles par unité monosaccharide. They can bind via glycoside bonds to form larger and more complex carbohydrates called polysaccharides and polysaccharides. Carbohydrates are biological molecules that serve as a source of energy. Monosaccharides are the simplest form of carbohydrates. The general formula is C n H 2n O n, or [Cn(H2O)n] or { CH2O}n albeit not all molecules fitting this formula (e.g. they are the simplest group of carbohydrates that can not be hydrolyzed more. monosaccharides combine to form a disaccharide.Learn about Monosaccharides in more detail here.. Cyclic monosaccharides react with alcohols to form acetals and ketals. Found inside – Page 963... -nyən \ n ( 1760 ) 1 : any of a breed ing many monosaccharide units and marked by complexity of ... beige \ k , " , æ , ve , see Guide to Pronunciation. Found inside – Page xlivF. and Dr. W. D. ) , A Dictionary of Scientific Terms : Pronunciation ... der reinen und aus Glukosiden usw erhaltenen Monosaccharide und Aldehydsäuren ... Found inside – Page 249(southern) remodelled after MOGUL n.1 MONOSACCHARIDE n. compound compound, after German ... “representing the pronunciation of (German) Nati-” in sense I ... 'The difference can be connected with the structural properties of the glucose and mannitol molecules, as the mannitol is a polyhydric alcohol, whereas the glucose is a monosaccharide.' 'Fructose, either as a monosaccharide or in sucrose, was also found to decrease the negative effects of ethanol in rats.' A molecule with a straight chain of monosaccharides is called a linear polysaccharide, while a chain that has arms and turns is known as a branched polysaccharide. Monosaccharide definition: a simple sugar , such as glucose or fructose , that does not hydrolyse to yield other. The commonest monosaccharide in the body is GLUCOSE, which is a hexose, with six carbons. The possible values for n are positive integers equal or greater than 3. (Feeder Pathways for Glycolysis, NCI Thesaurus/BIOCARTA) A class of monosaccharides with five carbon atoms. A double sugar, consisting of two monosaccharides joined by dehydration synthesis. Leave a vote for your preferred pronunciation. How to pronounce monosaccharide. Click on the arrows to change the translation direction. Found inside – Page 479Phonetic Pronunciation Lactobacillus acidophilus = lack ' - toe - buh - sill ' - us ... 1. indigenous 2. plaque 3. monosaccharide Part II : True or False 1. n. A carbohydrate that consists of a relatively small number of monosaccharides. Found inside – Page 97... vowel ) Over Ad Epi Mono Of Overabundance Adhesion Epidermis Monosaccharide Offense Root Example Capere ... Term : ecology front term pronunciation 64. To achieve this, a solid knowledge of cellulose is essential. As such this book on cellulose, the first in a series of three, is very timely. Please Disaccharide Definition. If you break down the word 'monosaccharide' it means 'one sugar' (mono=one, saccharide=sugar) which is referring to the fact that each monosaccharide is one molecule of sugar. Disaccharides are sugars (carbohydrate molecules) that form when two simple sugars i.e. Context examples . Monosaccharides are simple sugars, like glucose. monosaccharide The simplest form of sugar. monosaccharide - WordReference English dictionary, questions, discussion and forums. Barfoed's Test Definition. In monosaccharides, the number of carbons usually ranges from three to seven. Usage explanations of natural written and spoken English. They can join together and form complex carbohydrates, for example: 2 monosaccharides form disaccharides, 3-10 of them form oligosaccharides and 11 or more of them form polysaccharides. Found inside – Page 125... Spelling and Pronunciation of the American Chemical Society (1). ... is customarily used for saccharides containing fewer than ten monosaccharide units. Monosaccharide definition, a carbohydrate that does not hydrolyze, as glucose, fructose, or ribose, occurring naturally or obtained by the hydrolysis of glycosides or polysaccharides. {{view.translationsData[trans_lang][0].vote_count}}, {{app.userTrophy[app.userTrophyNo].hints}}, {{view.translationsData[trans_lang][0].word}}, {{view.translationsData[trans_lang][0].username}}. Word of the day - in your inbox every day, © 2021 HowToPronounce. A carbohydrate is an organic compound with the formula (CH2O), with n > 3. Found inside – Page 364... and the Allied Sciences with Their Pronunciation, Etymology and Signification . ... A levorotatory monosaccharide , CH20triangle FRONTAL TRIANGLE . A polysaccharide is also called a glycan. Polysaccharides are long-chain carbohydrates composed of monosaccharides that our bodies use for energy and cell structure. Compare Glucose and Galactose in the Chair Structures. Oligosaccharide definition is - a saccharide that contains usually three to ten monosaccharide units. They are polyhydroxy aldehydes or ketones with a carbon backbone. From 300 to 600 questions and answers, each volume in the ACT series is a quick and easy, focused read. Reviewing ACT flash cards is the first step toward more confident ACT preparation and ultimately, higher ACT exam scores! Found inside – Page 45A pronunciation guide for selected terms is provided as a learning aid . 1. acid 19. element 2. activation energy ... DNA 36. monosaccharide 26b . 27 . Learn more. Monosaccharides can by combined through glycosidic bonds to form larger carbohydrates, known as oligosaccharides or polysaccharides.An oligosaccharide with only two monosaccharides is known as a disaccharide.When more than 20 monosaccharides are combined with glycosidic bonds, a oligosaccharide becomes a . Polysaccharide Definition: A polysaccharide is defined as a large molecule composed of many smaller monosaccharides. Monosaccharides are classified by the number of carbon atoms in the molecule. The monosaccharide is an aldose when the carbonyl group is an aldehyde (RCOH), but is a ketose when the carbonyl group is a ketone (RCO). Monosaccharides obtained directly from foods or formed by digestion of disaccharides, oligosaccharides, and polysaccharides in the mouth by salivary α-amylase are used by bacteria to produce acids that erode mineralized dental tissues. Listen to the audio pronunciation in English. From 300 to 600 questions and answers, each volume in the GRE series is a quick and easy, focused read. Reviewing GRE flash cards is the first step toward more confident GRE preparation and ultimately, higher GRE exam scores! Monosaccharide Definition. Explore the definition and examples of polysaccharides and learn about . Oligosaccharides can have many functions including cell recognition and cell binding. Simply select a language and press on the speaker button to listen to the pronunciation of the word. All Free. Starch is a sugar that comes from plants and may be stored for a long time. Found inside – Page 136See: hnqt or hnk for the pronunciation. herb beer, (uhrb'beeyr') 1. ... (hehk'-sos) Any monosaccharide containing six carbon atoms; includes glucose, ... Like all carbohydrates, a monosaccharide consists of three chemical elements: carbon, hydrogen, and oxygen.It is the simplest type of carbohydrate molecule and often serves as the basis for forming more complex molecules. The position of the -OH group on the carbon (#4) is the only distinction between glucose and galactose.Glucose is defined as the -OH on C # 4 in a horizontal projection in the chair form, (down in the Haworth structure).Galactose is defined as the -OH on C # 4 in a upward projection in the chair form,(also upward in the Haworth structure). starch and glycogen) and as structural units (e.g. Monosaccharides are poly- hydroxy-aldehydes or -ketones, generally with an unbranched C-chain. Usage explanations of natural written and spoken English. What is a Monosaccharide - Definition, Properties, Examples 2. Disaccharide Definition. Cambridge Advanced Learner's Dictionary & Thesaurus. From 300 to 600 questions and answers, each volume in the SAT series is a quick and easy, focused read. Reviewing SAT flash cards is the first step toward more confident SAT preparation and ultimately, higher SAT exam scores! Found inside – Page 435... an acid derivative of the monosaccharide l-gulose (see Figure 7-13). l-Gulonic acid is ... Pronunciation guidelines for the common names of the B. Every human culture relies heavily on starch as a food source. n. Any of several carbohydrates, such as tetroses, pentoses, and hexoses, that cannot be broken down to simpler sugars by hydrolysis. If n . Depending on the number of carbon atoms . How to say monosaccharide. The word in the example sentence does not match the entry word. Polysaccharides Definition and Structure. Found inside – Page 141Perform a starch hydrolysis test Pronunciation Guide Bacillus subtilis ( bah ... + Glucose ( Monosaccharide ) a - amylase - producing bacteria No starch ... The simplest unit of a carbohydrate is a monosaccharide. Carbohydrates are a large group of organic compounds consisting of carbon, hydrogen, and oxygen which can be typically broken down into monomers to release energy in living beings. Monosaccharides Structures. monosaccharide pronunciation. Glycan: A generic term for any sugar or assembly of sugars, in free form or attached to another molecule, used interchangeably with saccharide or carbohydrate. 0 && stateHdr.searchDesk ? Congrats! Monosaccharide Definition. Les monomères de monosaccharide peuvent comprendre l'une quelconque d'un certain nombre de monosaccharides C6 et/ou C5. Definition of Monosaccharides. Authoritative and up-to-date, this is the perfect reference book for students of chemistry, whether at school or university. Found inside – Page 366Comprising the Pronunciation, Derivation, and Full Explanation of Medical, Pharmaceutical, Dental, and Veterinary Terms ... Monosaccharide locular . Monosaccharides are the simplest carbohydrates that cannot be further hydrolyzed. (English pronunciations of monosaccharide from the Cambridge Advanced Learner's Dictionary & Thesaurus and from the Cambridge Academic Content Dictionary, both sources © Cambridge University Press), I wouldn’t trust them an inch: talking about people you don’t trust. How to say Monosaccharide in English? Monosaccharide definition: a simple sugar , such as glucose or fructose , that does not hydrolyse to yield other. Found inside – Page 290A monosaccharide showing M , is often characterized by measurement of the starting ... Reacting Material ; the " i " is added for pronunciation purposes ) . Seems like your pronunciation of Monosaccharide is not correct. Found inside – Page 925For instance, monosaccharide means a one-unit saccharide. ... For reasons of pronunciation, some carboxyl groups require the -oic or -oate suffixes, ... Definition of Monosaccharide : a sugar that is not decomposable into simpler sugars by hydrolysis, is classed as either an aldose or ketose, and contains one or more hydroxyl groups per molecule — called also simple sugar Examples of Monosaccharide in a Sentence. Long polymers of monosaccharides, such as starch, glycogen, cellulose, and chitin, make up complex carbohydrates. These three chemicals are sodium citrate, copper (II) sulphate pentahydrate and sodium carbonate. Sometimes this alcohol is actually a carbohydrate since they function very similarly to alcohols. The physical and chemical properties of oligosaccharides are very similar. Carbohydrates are molecules that contain carbon, hydrogen, and oxygen. Definition. A polysaccharide is a large molecule made of many smaller monosaccharides. Found inside – Page 36... in each grouping below aloud , using the pronunciation guide if necessary . ... PROH - teen ) messenger RNA monosaccharide ( mahn - oh - SAK - ah - ride ) ... Monosaccharides are the most basic form of carbohydrates. Sugars - definition Sugar is sweet, soluble, crystalline carbohydrate. These are the most abundant biomolecules in the living body in terms of mass. They may thus be trioses, tetroses, pentoses, hexoses, etc. Fructose is an abundant monosaccharide in fruit, and is also found along with glucose in the common disaccharide sucrose. Monosaccharide is any of a class of carbohydrates that cannot be broken down to simpler sugars by hydrolysis and that constitute the building blocks of oligosaccharides and polysaccharides. | Meaning, pronunciation, translations and examples A polysaccharide can be a homopolysaccharide, in . Learn more. These small monomers are bind by some special enzymes together and create large sugar polymers or polysaccharides, and are also known as glycan. Monosaccharides, Oligosaccharides, and Polysaccharides are the main . Three common disaccharides are sucrose, maltose, and lactose. Carbohydrates definition. The three main functions of polysaccharides are providing structural support, storing energy, and sending cellular communication signals. Disaccharide, also called double sugar, any substance that is composed of two molecules of simple sugars (monosaccharides) linked to each other.Disaccharides are crystalline water-soluble compounds.The monosaccharides within them are linked by a glycosidic bond (or glycosidic linkage), the position of which may be designated α- or β- or a combination of the two (α-,β-). If the sugar has an aldehyde group (the functional group with the structure R-CHO), it is known as an aldose, and if it has a ketone group (the functional group with the structure RC(=O)R . monosaccharide: Any of several carbohydrates, such as tetroses, pentoses, and hexoses, that cannot be broken down to simpler sugars by hydrolysis. They have 12 carbon atoms, and their chemical formula is C 12 H 22 O 11. Monosaccharide. Barfoed's test is a chemical test used to detect the presence of monosaccharides which detects reducing monosaccharides in the presence of disaccharides. : In particular a carboxymethylinulin or a . Add ${headword} to one of your lists below, or create a new one. Where Is Trinidad And Tobago Located, Black Ripped Skinny Jeans Outfit Ideas, Just Breathe Willie Nelson Ukulele Chords, Nebraska Primaries 2021, Samsung Scholarship 2021, Google Maps Middle Earth, Mro Is Related To Method Signature, Scotland Euro 2021 Team, The most abundant monosaccharide in nature is a 6 carbon sugar . Found inside – Page 127A monosaccharide ! A polysaccharide ? 3. Name two pentoses . 4. ... GLOSSARY Pronunciation and Simple Definitions 1 Acetaldehyde ( ăs'ět ăl'de. An oligosaccharide (/ˌɑlɪgoʊˈsækəˌɹaɪd/; from the Greek ὀλίγος olígos, "a few", and σάκχαρ sácchar, "sugar") is a saccharide polymer containing a small number (typically three to ten) of monosaccharides (simple sugars). (12 Dec 1998) Lexicographical Neighbors of . Three common disaccharides are sucrose, maltose, and lactose.They have 12 carbon atoms, and their chemical formula is C 12 H 22 O 11.Other, less common disaccharides include lactulose, trehalose, and cellobiose. Rate the pronunciation difficulty of Monosaccharide. The general formula is C n H 2n O n. They are the simplest form of sugar and are usually colorless, water-soluble, and . Monosaccharides (from Greek monos: single, sacchar: sugar), also called simple sugars, are the simplest form of sugar and the most basic units of carbohydrates. Monosaccharide VS Disaccharide VS Polysaccharide Vocabulary. Simple sugars, carbohydrates which cannot be decomposed by hydrolysis. A monosaccharide is the simplest form of sugars, containing single polyhydroxy aldehyde or ketone unit.Oligosaccharide consists of two or more units of monosaccharides, joined by glycosidic bonds.While the Polysaccharide consists of more than 20 or more units of monosaccharides, some may have hundreds or thousands of units. Crowdsourced audio pronunciation dictionary for 89 languages, with meanings, synonyms, sentence usages, translations and much more. Monosaccharides are classified by the number of carbon atoms in the molecule. Monosaccharide Definition. Monosaccharide definition is - a sugar that is not decomposable into simpler sugars by hydrolysis, is classed as either an aldose or ketose, and contains one or more hydroxyl groups per molecule —called also simple sugar. . From: Burt and Eklund's Dentistry, Dental Practice, and the Community, 2021. Define monosaccharide. monosaccharide, also called simple sugar, any of the basic compounds that serve as the building blocks of carbohydrates.Monosaccharides are polyhydroxy aldehydes or ketones; that is, they are molecules with more than one hydroxyl group (―OH), and a carbonyl group (C=O) either at the terminal carbon atom (aldose) or at the second carbon atom (ketose). Glucose is a monosaccharide that expresses the amount of sugar we have in our blood. Keep up. We recommend you to try Safari. Special enzymes bind these small monomers together creating large sugar polymers, or polysaccharides. A monosaccharide is the most basic form of carbohydrates. From 300 to 600 questions and answers, each volume in the GED series is a quick and easy, focused read. Reviewing GED flash cards is the first step toward more confident GED preparation and ultimately, higher GED exam scores! The smallest monosaccharides (for which n = 3) are dihydroxyacetone and glyceraldehyde.However, not all carbohydrates conform to this precise stoichiometric definition (e.g., uronic acids, deoxy-sugars such as fucose), nor are all chemicals that do conform to this definition automatically classified as carbohydrates. The commonest monosaccharide in the body is GLUCOSE, which is a hexose, with six carbons. Polysaccharides [Greek poly = many; sacchar = sugar] are complex carbohydrates, composed of 10 to up to several thousand monosaccharides arranged in chains. Found inside – Page 810... Spelling, and Pronunciation of the American Chemical Society and by the ... or potentially reducing, group of the monosaccharide or derivative thereof. Unfortunately, this device does not support voice recording, Click the record button again to finish recording. (Figure \(\PageIndex{2}\)). Polysaccharide Functions. Listen to the audio pronunciation in the Cambridge English Dictionary. Disaccharides are made up of two, linked monosaccharides and broken back down into the . The monosaccharides are simple sugars such as glucose. (Pentose, NCI Thesaurus/CRCH) The beta isoform of D-glucopyranose, a synthetic simple monosaccharide as an energy source. a sugar (like sucrose or fructose) that does not hydrolyse to give other sugars; the simplest group of carbohydrates. This informal text also places the main emphasis on understanding and predicting reactivity rather than synthetic methodology as well as utilising a mechanism based layout and featuring annotated schemes to reduce the need for textual ... A monosaccharide is the most basic form of carbohydrates. Carbohydrates (or saccharides) are defined as polyhydroxy aldehydes or polyhydroxy ketones. monosaccharide synonyms, monosaccharide pronunciation, monosaccharide translation, English dictionary definition of monosaccharide. Benedict's Reagent: The term Benedict's reagent is a solution of three chemicals. glucose), as a store of energy (e.g. You can try again. Subscribe to learn and pronounce a new word each day! Monosaccharide, More, Molecule. 1. Found inside – Page 74From what monosaccharide is glucuronic acid " derived ” ? -Beta ( 8 ) -Carboxyl ( organic acid ) - glucose Pronunciation : GLUE - QUE - RON - IC -beta 25 ... All Rights Reserved, {{app['fromLang']['value']}} -> {{app['toLang']['value']}}, Pronunciation of Monosaccharide with 4 audio pronunciations. Monosaccharides. 'In the digestive track carbohydrates are converted to monosaccharides, mostly glucose and fructose.'. See more. Since you have exceeded your time limit, your recording has been stopped. Unfortunately, this browser does not support voice recording. If, for instance, n = 3, that means that there are three carbon atoms, and these monosaccharides are called trioses. The simplest monosaccharides are glyceraldehyde and dihydroxyacetone (with 3 carbons). Found inside – Page 127A monosaccharide ? A polysaccharide ? 3. Name two pentoses . 4. How can dextrose be prepared ? GLOSSARY Pronunciation and Simple Definitions 1 Acetaldehyde ... You have earned {{app.voicePoint}} points. In chemistry terminology , all monosaccharide names end with ose, such as fructose, glucose, ribulose, or galactose. Learn how to say Monosaccharides with EmmaSaying free pronunciation tutorials.Definition and meaning can be found here:https://www.google.com/search?q=define. Found inside – Page 860... -z monosaccharide BR mono(0)- 'sakoraid, -z AM mana'saeko,raid, –Z monosodium glutamate BR mono(0)soodiom 'glu:tomert AM 'mano,soodiom 'gludo, ... The carbohydrate structure largely determines its function. All these simple molecular structures are divided into two large groups : aldoses and ketoses (the former are also called polyhydroxyaldehydes and the latter polyhydroxyketones). Log in or Carbohydrates Definition. Monosaccharide examples: glucose, fructose and galactose. Includes monosaccharides, oligosaccharides, and polysaccharides, as well as derivatives of these compounds. Structure of Monosaccharides: Monosaccharides, as previously mentioned, are composed of three main atoms: carbon, oxygen and hydrogen. Any of several carbohydrates, such as tetroses, pentoses, and hexoses, that cannot be broken down to simpler sugars by h. ; There are twice as many hydrogen atoms as carbon or oxygen atoms. You can contribute this audio pronunciation of Monosaccharide to HowToPronounce dictionary. monosaccharide definition. 0 && stateHdr.searchDesk ? Found inside – Page 371... 229 Mononucleosis , 244 Monosaccharide , 322 Monosomy , 220 Monosynaptic reflex ... 137 Prolactin ( PRL ) , 183 Pronunciation guide , 1 Proprioception ... Monosaccharides are classified according to three different characteristics: the position of the carbonyl group, the number of carbon atoms, and its chiral handedness. The oligosaccharides structure is composed of around three to 10 monosaccharides, or simple sugars, that are linked together to form a chain. Like monosaccharides and polysaccharides, oligosaccharides are a type of carbohydrate. glucose), as a store of energy (e.g. Carbohydrates definition. Polysaccharide Definition. One . Key Areas Covered. A disaccharide, also called a double sugar, is a molecule formed by two monosaccharides, or simple sugars. The most common monosaccharides that appear as parts of polysaccharides are glucose, fructose, galactose and mannose. Register An oligosaccharide with only two monosaccharides is known as a disaccharide. With few exceptions (e.g., deoxyribose), monosaccharides have the chemical formula C x (H 2 O) y, where x is at least 3. 'pa pdd chac-sb tc-bd bw hbr-20 hbss lpt-25' : 'hdn'">, Clear explanations of natural written and spoken English. Sugars are categorized as monosaccharides or disaccharides.
The House Nobody Asked For Ending, Prince Of Peace Weekly Bulletin, California Scholarships 2021, Things To Do In The Catskills During Covid, Haunted Half Marathon Results, Shore Country Day School Salary, Earth Is Spinning Faster Nasa, Wildflower Seed Mix Ontario, Digital Pharmacist Acquired, Samsung S21 Qr Scanner Not Working, Crocodile Excretory System,