Controls the rate of 25-hydroxycholicalciferol formation
B
Controls the rate of calcium transpo in the mucosa of the small intestine
C
Controls the rate of formation of calcium-binding protein
D
Controls the rate of formation of 1,25-dihydroxycholicalciferol
High-Yield Explanation
Parathyroid hormone acts in the renal coex to stimulate the reaction forming 1,25-dihydroxycholicalciferol from 25-hydroxycholicalciferol. It has no effects on other the other reactions