Which of the following is a precursor to vitamin D?

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Multiple Choice

Which of the following is a precursor to vitamin D?

Explanation:
Vitamin D synthesis in the skin begins with a sterol derived from cholesterol. This compound, 7-dehydrocholesterol, is converted to previtamin D3 when skin is exposed to UVB light, and then to vitamin D3. So cholesterol provides the starting material for the body to produce vitamin D. The other options—vitamin C, glucose, and choline—do not participate in the body's synthesis of vitamin D.

Vitamin D synthesis in the skin begins with a sterol derived from cholesterol. This compound, 7-dehydrocholesterol, is converted to previtamin D3 when skin is exposed to UVB light, and then to vitamin D3. So cholesterol provides the starting material for the body to produce vitamin D. The other options—vitamin C, glucose, and choline—do not participate in the body's synthesis of vitamin D.

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