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Published byAriana Issac Modified over 9 years ago
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VITAMINS Most plants synthesize all of these substances. Animals generally lost their ability to synthesize so they must obtain vitamins from food molecules.
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Human cells need At least 13 different vitamins Each of them has specific functions in various metabolic activities. Absence of one vitamin cannot be compensated with another.
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Cannot be used as energy source ! Cannot be used structural materials either. We can use some of the vitamins right after we get nutrition, For some of them; the initial substance called provitamin is taken firstly and converted to the original vitamin molecule.
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VITAMINS Fat soluble vitamins A D E K Water soluble vitamins B C
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Vitamin A (Retinol) Important for growth Daily need: 1-2 mg Firstly taken as Provitamin A then converted to Vitamin A Released to bloodstream.
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Vitamin E (Tocopherol) Works with vitamin A in the development of the ovaries and the testes.
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Water Soluble Vitamins B and C groups Vitamin B1, B2, B3, B5, B6, B9, B12 Vitamin C (Ascorbic Acid)
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Vitamin C involves in oxidation and reduction reactions
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Joins the structure of FAD molecule
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Vitamin B5 Widely distributed in nature. Essential for the synthesis of coenzyme A (functions in conversion of carbohydrates, lipids, proteins into energy) Contributes to the production of suprarenal hormones so it’s called as Anti – stress vitamin
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VITAMINSFunction in the body Deficiency symptoms A Help the production of mucus Damage the skin and mucous membranes, causing infections D Help absorption of Ca and P ions through intestines, calcification of bones Bone deformation, rickets E Prevents damage to cell membrane Damage the red blood cells, anemia K Help blood clottinghemorrhaging C Hormone, bone and collagen production Retarded growth, swollen gums and joints B9(Folic Acid) Help nucleic acid synthesis Anemia B12 Help nucleic acid and amini acid metabolism Nervous abnormalities and anemia
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