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♣ Insulin, hormone, produced in the islets of Langerhans of the pancreas, that regulates the metabolism of carbohydrates, fats, and starches in the body. Insulin enables the cells of the body to take up glucose, the simple sugar that cells burn for energy
☻ physical properties :- thin, colourless, almost clear ....... but at some diabetic stages the combination and contents of substances changes to other physical forms such as to other colours or thickness.
☻ chemical properties :- insulin is a polypeptide hormone formed, after elimination of C peptide by hydrolysis, of two chains of 21 and 30 amino acids, connected by two disulfide bridges. It is secreted by the ß cells of the islets of Langerhans of the pancreas and exerts an hypoglycemic action. It belongs to the group of peptides called IGF (insulin like growth factors) or somatomedins.
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