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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.
Q. Phylogenetic species concept ? Taxonomists (scientists who compare, classify and name organisms) tend to describe a species by studying their physical characteristics and be
How does aldosterone act and where is it produced? Aldosterone is a hormone that acts upon the nephron tubules stimulating the resorption of sodium. Thus it contributes to the
Explain exotic species? Describe with the help of two examples how the exotic species disturb the native species of an ecosystem ?
Cell-mediated immunity: The immune reaction directed against the body cells which have been infected by viruses and bacteria; and are controlled by T cells.
FUNCTIONS OF SKELETON - 1. Support. 2. To give shape to the body. 3. Protection of different organs. 4. Site for muscle attachment. 5. He
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Define Heart Diseases - excessive fat intake? Heart diseases show strong links to fat and cholesterol intake. Foods rich in cholesterol are of animal origin and given in Table.
Weight Measurement of New Born Check weight on an infant weighing machine. Weight of the neonate is 2.8-3.5 kg with an average weight of 2.5 kg. When taking weight take
what is biological sickness of soil and its management
What is Physical Accommodation Physical Accommodation is the actual physical deformation in the lens power. It is measured in diopters, e.g., if the focussing power of the eye
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