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There is no store for nitrogen-having compounds as there is for carbohydrate (glycogen) or lipids (triacylglycerol). Thus nitrogen ingested in excess of what is required through the organism has to be excreted. The excess nitrogen is first transformed into ammonia and is then excreted from living organisms in one of three ways. Various aquatic animals simply excrete the ammonia itself straightly into the surrounding water. The Birds and terrestrial reptiles excrete the ammonia in the form of uric acid, though most terrestrial vertebrates convert the ammonia into urea before excretion. These three classes of organisms are called as: ureotelic, ammonotelic and uricotelic, respectively.
FUNCTIONS OF CELL WALL 1. Provides shape to plant cell rigidity to cells. 2. Functions as a barrier to entry of pathogens into the cells. 3. Provides pr
Ensuring Food Safety It is now well-known that the end product inspection and testing does not provide safety of food. It has inherent limitation of mapping the potential ha
THYMU S GLAND Flat, bilobed gland located in the mediastinal space in front of heart. Well developed in new born child and grows upto puberty but starts degenerating the
Access Cavity Perforation - Types of Root Perforation Can occur during access cavity perforation (specially in anterior) Due to misdirection of bur during access cavit
sir i''m not understanding cell division rightly. in case of meiosis both paternal and maternal chromosome goes in two cell separately while in case of mitosis they go alongwit
Which of the following will lead to a decrease in the amount of oxygen delivered to the body cells in a leg? A. A decrease in hydrogen ion concentration in red blood cells in t
Define Nutritional Requirements of Fats and Oils during Pregnancy and Lactation? ICMR (1990) recommends that linoleic acid requirements should be raised to 4.5 en% during pregn
Explain about the cyclamate - artificial sweeteners? Another sweetener is cyclamate (sodium cyclohexylsulphamate). Have a look at its structure as shown in the figure. It is on
what is the excretory organs of,rat,fish,lizard,frog,cockroach,bird and snail.
Types of Biogeochemical Cycles There are two basic types of biogeochemical cycles, gaseous and sedimentary. In the gaseous type of biogeochemical cycle there is a prominent ga
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