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Biochemistry

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Vitamins, Harmones and Hemoglobin

Question
28 out of 30
 

Active form of vitamin D is(AIIMS May 2007)



A 1,25 (OH)2 Cholecalciferol

B 24,25 (OH)2 Cholecalciferol

C 25 OH Cholecalciferol

D Calcitroic acid

Ans. A 1,25 (OH)2 Cholecalciferol

Also called as vit D3 I (calcitriol), the active form of vitamin D is formed as follows:

The essential feature about the last step occurring in kidney is that this step is stimulated by Parathormone, prolactin.

a. Increasing the synthesis of calbindin, which increases calcium absorption from intestines and calcium reab­sorption in kidneys.

b. Increases the activity of osteoclasts, which increases calcium and phosphate levels.

Vitamins, Harmones and Hemoglobin Flashcard List

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