Hormonal vitamin is ?: (A) Niacin, (B) Pyridoxin, (C) Vitamin D, (D) Riboflavin
Answer is C. Ans. is 'c' i.e., Vitamin D Active form of vitamin D i.e. 1-25 dihydroxy-cholecalciferol is a vitamin produced in kidney.It acts on intranuclear receptors to regulate gene expressions (transcription factors).