Author Question: What percentage of the U.S. population is deficient in vitamin D? a. 5 b. 10 c. 20 d. 30 e. ... (Read 40 times)

sc00by25 · **on:** Aug 20, 2018

What percentage of the U.S. population is deficient in vitamin D?

a. 5
b. 10
c. 20
d. 30
e. 40

Question 2

The main function of vitamin D is to promote

a. secretion of calcitonin.
b. synthesis of 7-dehydrocholesterol.
c. synthesis of carotenoids and controls absorption of fat-soluble vitamins.
d. calcium and phosphorus absorption, and calcium mobilization from bone.
e. conversion of calcium and phosphorous to more readily absorbable compounds.