EXCRETORY SYSTEMS C All work in the same basic way: Body fluid is filtered by a special organ. Selectively permeable membranes remove urea or uric acid. Osmolarity is controlled by selective reabsorption/secretion. C 5 types of excretory systems: None in porifera‚ cnidaria Protonephridia in planaria & rotifers Metanephridia in annelids Malpighian tubules in terrestrial arthropods Kidneys (with nephrons) in vertebrates Protonephridia Have flame bulbs‚ tubules‚ and nephridopores. C Flame bulbs
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Melting Point and Boiling Point of Organic Compounds Bongo‚ Sayre‚ J1 1Student‚ Organic Chemistry 1 Laboratory / B11‚ School of Chemical Engineering‚ Chemistry and Biotechnology‚ Mapúa Institute of Technology ABSTRACT The melting point of a substance is the temperature at which the material changes from a solid to a liquid state while the boiling point is the temperature at which it changes from liquid to solid. In this experiment‚ the main objectives were to determine the effects of the following
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the 37ºC room(Leboffe & Pierce‚ 176). Urea
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EXERCISE 3: DIFFERENTIAL PROTEIN PRECIPITATION Vanessa Andrea Estepa University of Mindanao‚ College of Science and Mathematics ABSTRACT: Denaturation is the disruption in the original conformation of the protein wherein the secondary‚ tertiary and quaternary structures are all affected. Denaturation is brought about by various kinds of physical and chemical means; this includes the addition of strong acids‚ heavy metal cations‚ alkaloidal reagents‚ salting out and addition of organic solvents.
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excretory system is critical to survival. The trillions of living cells in the human body produce metabolic wastes which must be eliminated from the body. If the wastes aren’t eliminated‚ it might lead to death. These wastes include carbon dioxide‚ urea‚ water‚ water vapor‚ and salts. There are four organs that make up the excretory system: the lungs‚ kidneys‚ liver‚ and skin. 2 INSTRUCTIONAL NOTES Before presenting this lesson to your students‚ we suggest that you preview the video and review
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calcium component. This sample was diluted with 25mL of distilled water in a beaker. It was converted into a soluble precipitate by adding 25 mL of ammonium oxalate solution and 15 g of solid urea. Since the solution is acidic‚ the Ca2+ and C2O42- were dissolved. By boiling the solution‚ the pH of the urea increases thus large‚ pure crystals of precipitate was able to obtain. Subtracting the mass of the petridish alone from the mass of the petridish with CaC2O4 2H2O precipitate‚ one can get the
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1 ton of compound animal feed per hour and 25 Urea Molasses Block (UMB) per hour. This feed and UMB will be supplemented to livestock in addition to green fodder ad libitum (Freely available to animals) for high production. Different formulae may be used to prepare compound feed such as calf fattening formula and dairy animal formula etc. to facilitate the customers nationwide. The proposed business will be manufacturing compound animal feed and Urea Molasses Block (UMB) for meeting the demand of
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Chemical modification of cellulose presently involves cross linking it with resin. This method evolved from the formaldehyde based condensation with urea or urea derivatives and poly-carboxylic acids. The urea derivatives include di-methylolurea‚ di-methylol ethylene urea‚ dimethylol alkyl carbamate‚ tri-methylol melamine‚ di-methylol di-hydroxy ethylene urea. The poly-carboxylic acids include butane tetra-carboxylic acid‚ citric acid‚ cyclopentane tetra-carboxylic acid‚ tetra hydro furan-tetra-carboxylic
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Social Alchemy 2nd Quarter / SY 2012 – 2013 Eng’r. Josephine A. Ng CHM142L/B21 Concepcion‚ Jermin B. Group# 2 Experiment No. 1 ------------------------------------------------- MELTING POINT AND BOILING POINT OF ORGANIC COMPOUNDS ------------------------------------------------- ABSTRACT The melting point (MP) and the boiling point (BP) are probably the most widely used physical constant in the field of science. Determining the boiling point and the melting point of a compound helps you to characterize
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Pseudomonas aeruginosa(P.aeruginosa)‚ and Salmonella typhimurium (S.typhimurium). The biochemical tests utilized were; Triple Sugar Iron Agar (TSIA) test‚ Sulfur Indole Motility (SIM) test‚ Methyl red test and Voges-Proskauer (MR-VP) test‚ Citrate test‚ Urea test‚
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