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In the case of the mammal (cow and sheep, Lindsay to) and others) the descending ... form in which nitrogen is excreted. Working on Mustelus cants, she found that its urinary urea formed 84-7 per cent, of the total waste nitrogen, ...
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jeb.biologists.org/cgi/reprint/7/1/7.pdf
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In the body, the amino group is quickly oxidized to form ammonia (or, ... Organisms with less fresh water available, such as some marine organisms and all terrestrial organisms, are not as likely to waste water excreting nitrogen one atom at a time. ... Marine mammals have some of the most efficient kidneys known.
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www.marietta.edu/~mcshaffd/aquatic/sextant/excrete.htm
www.marietta.edu/~mcshaffd/aquatic/sextant/excrete.htm
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, uricotelism, uric acid, uric acid is excreted by, Form of nitrogen waste excreted by crayfish, crayfish, aquatic turtles, liver of mammals, nitrogenous waste, Urea, urea mammals, types of nephrons, simple tubular gland, types of solid wastes, reptiles ...more...
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www.tutorvista.com/content/biology/biology-iv/excretion...
www.tutorvista.com/content/biology/biology-iv/excretion/excretion-types.php
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16. Form of nitrogen excreted as waste by mammals ... 50. Produced by bacterial digestion of hydrocarbons in solid waste ... 72. Which of the following is NOT a form of energy?
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pages.cms.k12.nc.us/larrylane/
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Proteins and nucleic acids are the two main sources of nitrogenous wastes. Proteins are the source of over 95% of the total amount of excreted nitrogen; ... Ammonia, urea and uric acid are the most common nitrogenous waste products, but not the only ones. Some sharks secrete trimethylamine oxide (TMO). A variety...
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clem.mscd.edu/~churchcy/BIO3200/pdf_files/nitrogen_meta...
clem.mscd.edu/~churchcy/BIO3200/pdf_files/nitrogen_metabolism.htm
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Urea is a small molecule, only 60 Da, that constitutes the major form of waste nitrogen that is excreted in mammals. Its extraordinarily high solubility in water (saturation at >6 M) makes it ideal for excretion by the concentrating kidney.
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jasn.asnjournals.org/cgi/content/full/18/3/679
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The urea cycle is a liver resident process removing nitrogen in form of ammonia to be excreted from the body. ... Like ornithine-carbamoyl transferase, arginase is a liver specific enzyme (in the cytoplasm) and only in those animals (mammals) which convert their nitrogen waste to urea. Note that in muscle most...
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www.whatislife.com/reader2/Metabolism/pathway/nitrogen....
www.whatislife.com/reader2/Metabolism/pathway/nitrogen.html
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waste; Excreted from or stored in inert form in a living body as a by-product of vital activity ; ... u·rine ; The waste product secreted by the kidneys that in mammals is a yellow to amber-colored, slightly acid fluid discharged from the body through the urethra.
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library.thinkquest.org/05aug/00724/glossary.html
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Birds follow a similar strategy of waste elimination. Uric acid is synthesized by the insect's tissues and released in soluble form into the hemocoel. The uric acid is absorbed by the Malpighian tubules and the low pH in the ... The nitrogen waste is excreted with other solid waste through the anus of the grasshopper.
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micro.magnet.fsu.edu/optics/olympusmicd/galleries/darkf...
micro.magnet.fsu.edu/optics/olympusmicd/galleries/darkfield/grasshoppermalpighian1.html
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