Multiple Choice
Which of the following is NOT a fat-soluble vitamin?
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7. Vitamins
Fat-Soluble Vitamins
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Which fat-soluble vitamin is synthesized in the skin upon exposure to ultraviolet (UVB) light?
A
Vitamin K
B
Vitamin E
C
Vitamin A
D
Vitamin D
Verified step by step guidance1
Understand that fat-soluble vitamins include Vitamins A, D, E, and K, each with distinct roles and sources.
Recall that Vitamin D is unique among these because it can be synthesized by the body, specifically in the skin.
Recognize that the synthesis of Vitamin D in the skin occurs when ultraviolet B (UVB) light from sunlight converts 7-dehydrocholesterol to previtamin D3.
Note that Vitamins A, E, and K are primarily obtained through dietary sources and are not synthesized in the skin.
Conclude that the fat-soluble vitamin synthesized in the skin upon UVB exposure is Vitamin D.
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