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| Q. |
Regarding vitamin D metabolism: |
| A. | 25-hydroxycholecalciferol is converted to 1,25-dihydroxycholecalciferol in the distal convoluted tubule of the kidney |
| B. | 1,25-dihydroxycholecalciferol receptors can be found in skin |
| C. | when calcium levels are high, 24,25-dihydroxycholecalciferol levels are also high |
| D. | transport in plasma is by binding to haemoglobin |
| E. | formation of 25-hydroxycholecalciferol is tightly regulated |
| Answer» B. 1,25-dihydroxycholecalciferol receptors can be found in skin | |
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