Considering the following events reflecting how vitamin D is synthesized and activated, which one of the following answers best represents the order in which these events occur?
A. Inactive vitamin D is transported to the liver where it is modified.
B. Inactive vitamin D is transported to the kidneys.
C. UV light strikes the skin and converts a steroid molecule into an inactive form of vitamin D.
D. Vitamin D is activated under the influence of PTH.
A) a, b, c, d
B) c, b, a, d
C) c, a, b, d
D) a, c, b, d
E) d, a, c, b

Question

Considering the following events reflecting how vitamin D is synthesized and activated, which one of the following answers best represents the order in which these events occur? 
A. Inactive vitamin D is transported to the liver where it is modified.
B. Inactive vitamin D is transported to the kidneys.
C. UV light strikes the skin and converts a steroid molecule into an inactive form of vitamin D.
D. Vitamin D is activated under the influence of PTH.
A) a, b, c, d
B) c, b, a, d
C) c, a, b, d
D) a, c, b, d
E) d, a, c, b

Quizplus · Accepted Answer

The correct order of events is as follows: 
C) UV light strikes the skin and converts a steroid molecule into an inactive form of vitamin D.
A) Inactive vitamin D is transported to the liver where it is modified.
B) Inactive vitamin D is transported to the kidneys.
D) Vitamin D is activated under the influence of PTH. 
Therefore, choice C is the correct answer.

Considering the Following Events Reflecting How Vitamin D Is Synthesized