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Questions and Answers
What is the chemical structure of Vitamin D?
What is the chemical structure of Vitamin D?
- Tri-steroid with three fused rings
- Tetra-steroid with four fused rings
- Seco-steroid with one broken ring (correct)
- Penta-steroid with five interconnected rings
Which food item is a poor source of dietary Vitamin D?
Which food item is a poor source of dietary Vitamin D?
- Salmon (200g)
- Sardines (in oil) (100g)
- Kellog’s Cornflakes (35g) (correct)
- Mackerel (200g)
What is the main function of 1,25-dihydroxyvitamin D?
What is the main function of 1,25-dihydroxyvitamin D?
- Regulate blood glucose levels
- Mobilize iron stores
- Support immune system function
- Increase calcium and phosphorus absorption (correct)
What is the primary source of dietary Vitamin D in this text?
What is the primary source of dietary Vitamin D in this text?
What is the significance of 25(OH)D in the body?
What is the significance of 25(OH)D in the body?
What is the role of 7-dehydrocholesterol in the synthesis of Vitamin D?
What is the role of 7-dehydrocholesterol in the synthesis of Vitamin D?
What is the primary function of Vitamin D in the body?
What is the primary function of Vitamin D in the body?
What is the percentage of Vitamin D status in Ireland based on the text?
What is the percentage of Vitamin D status in Ireland based on the text?
What is the primary difference between Vitamin D2 and Vitamin D3?
What is the primary difference between Vitamin D2 and Vitamin D3?
What is the primary function of 25-hydroxyvitamin D in the body?
What is the primary function of 25-hydroxyvitamin D in the body?
What is the role of 7-dehydrocholesterol in the synthesis of Vitamin D?
What is the role of 7-dehydrocholesterol in the synthesis of Vitamin D?
What is the main dietary source of Vitamin D listed in the text?
What is the main dietary source of Vitamin D listed in the text?
What is the significance of 1,25-dihydroxyvitamin D in the body?
What is the significance of 1,25-dihydroxyvitamin D in the body?
What is the primary function of Vitamin D in the body?
What is the primary function of Vitamin D in the body?
What is the chemical structure of Vitamin D?
What is the chemical structure of Vitamin D?
What is the primary form of Vitamin D synthesized in the skin upon exposure to UVB radiation?
What is the primary form of Vitamin D synthesized in the skin upon exposure to UVB radiation?
What is the primary difference between Vitamin D2 and Vitamin D3?
What is the primary difference between Vitamin D2 and Vitamin D3?
What is the significance of 1,25-dihydroxyvitamin D in the body?
What is the significance of 1,25-dihydroxyvitamin D in the body?
What is the role of 7-dehydrocholesterol in the synthesis of Vitamin D?
What is the role of 7-dehydrocholesterol in the synthesis of Vitamin D?
What is the primary function of 25-hydroxyvitamin D in the body?
What is the primary function of 25-hydroxyvitamin D in the body?
What is the primary source of dietary Vitamin D in this text?
What is the primary source of dietary Vitamin D in this text?
What is the main function of 1,25-dihydroxyvitamin D?
What is the main function of 1,25-dihydroxyvitamin D?
What is the chemical structure of Vitamin D?
What is the chemical structure of Vitamin D?
What is the significance of 25(OH)D in the body?
What is the significance of 25(OH)D in the body?
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