EXCRETION Introduction Major Metabolic Wastes - مصر

EXCRETION Introduction Humans must get rid of two types of Wastes . Wastes from the digestive system (feces) and Wastes from Metabolic activities (sweat & urine). Removing digestive Wastes (pooping) is called egestion. Removing Metabolic Wastes is called EXCRETION . Major Metabolic Wastes Table (1) summarizes the four types of Metabolic Wastes produced by humans (and other animals), and the type of chemical reactions that produce them. Metabolic waste TYPE OF CHEMICAL REACTIONS Water Dehydration synthesis & respiration Carbon dioxide Cellular respiration Salts Neutralization Urea Protein metabolism, deamination Table 1. The Major Metabolic waste products of human. Dehydration synthesis = reactions in which small molecules are combined to form large molecules Cellular respiration = chemical reaction that releases energy from organic molecules (usually glucose and fatty acids) Neutralization = reactions between acids & bases Deamination = removal of amino groups from protein molecules Remarks on the nitrogenous Wastes Amino acids Digestion of proteins lea

3 Uric acid It excreted by the animals which conserve water, at least during parts of their life cycle, such as birds, terrestrial reptiles, insects, and some snails.

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  Introduction, Waste, Major, Metabolic, Excretion introduction major metabolic wastes, Excretion

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