Consider the following statements with refrence to Vitamin D 1 It is from the diet or from skin synt...........

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Consider the following statements with refrence to Vitamin D:

1. It is from the diet or from skin synthesis is biologically inactive.

2. A protein enzyme must hydroxylate it to convert it to the active form.

Which of the statements given above is/are correct?

1 only

2 only

Both 1 and 2

Neither 1 Nor 2

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Explanation:

Vitamin D is a group of fat-soluble secosteroids responsible for increasing intestinal absorption of calcium, magnesium, and phosphate, and multiple other biological effects. In humans, the most important compounds in this group are vitamin D3 (also known as cholecalciferol) and vitamin D2 (ergocalciferol). Cholecalciferol and ergocalciferol can be ingested from the diet and from supplements. Only a few foods, such as the flesh of fatty fish, contain significant amounts of vitamin D.