what are vitamins.....

Asked by  | 7th Jul, 2008, 06:47: PM

Expert Answer:

A vitamin is an organic compound required as a nutrient in tiny amounts by an organism . A compound is called a vitamin when it cannot be synthesized in sufficient quantities by an organism, and must be obtained from the diet. Thus, the term is conditional both on the circumstances and the particular organism. For example, ascorbic acid functions as vitamin C for some animals but not others, and vitamins D and K are required in the human diet only in certain circumstances.

Answered by  | 7th Jul, 2008, 06:57: PM

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