Vitamin D can be made in the body with the help of:
A) bacteria.
B) tryptophan.
C) vitamin A.
D) sunlight.
E) exercise.

Question

Quizplus · Accepted Answer

Vitamin D is made in the body with the help of sunlight. When the skin is exposed to sunlight, a vitamin D precursor (7-dehydrocholesterol) is converted to vitamin D3 (cholecalciferol) which is then transported to the liver and kidneys for further processing into the active form of vitamin D that the body can use.

Vitamin D Can Be Made in the Body with the Help