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3. Avitaminoz va gipervitaminoz tushunchalarini mazmunini bering.
4. Kokarboksilaza preparatini ta’sir etish mexanizmini tushuntiring.
5. Nikotin kislotasi va nikotinamidning ta’sirini qiyoslang.
6. D-askorbin kislotasining ta’sirini tushuntiring.
7. D- vitamini qanday omil ta’sirida organizmda hosil bo’ladi?
8. Organizmning qanday faoliyati uchun E- vitamini zarur?
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