All of the Following Statements About the Vitamin D-Regulated of Calcium

question 18

Multiple Choice

All of the following statements about the vitamin D-regulated of calcium ions are true EXCEPT

• A) ergocalciferol is normally converted to cholecalciferol in a reaction requiring ultraviolet light.
• B) irradiated ergosterol is added to commercial milk because it can replace cholecalciferol.
• C) cholecalciferol is 25-hydroxylated in the liver.
• D) hydroxycholecalciferol is further hydroxylated in kidney to form the active hormone.
• E) excess vitamin D can lead to hypercalcemia, which in turn can result in calcification of soft tissue.

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