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Questions and Answers
What is the starting point for the formation of Vitamin D?
What is the starting point for the formation of Vitamin D?
- Calcitriol
- 24-hydroxylase
- Vitamin D-binding protein
- Chylomicrons (correct)
Which enzyme is responsible for hydroxylating Vitamin D at Carbon 25 in the liver?
Which enzyme is responsible for hydroxylating Vitamin D at Carbon 25 in the liver?
- NADPH-dependent enzyme (correct)
- 1-hydroxylase
- Vitamin D-binding protein
- 24-hydroxylase
What is the end product of the metabolism of Vitamin D in the kidneys?
What is the end product of the metabolism of Vitamin D in the kidneys?
- 24-hydroxylase
- Calcitriol (correct)
- Cholecalciferol
- Vitamin D-binding protein
Which process is inhibited by 1,25-(OH)2 D3 through end product inhibition?
Which process is inhibited by 1,25-(OH)2 D3 through end product inhibition?
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Which molecule transports most of the absorbed Vitamin D in the blood?
Which molecule transports most of the absorbed Vitamin D in the blood?
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What is the function of 1-hydroxylase in Vitamin D activation?
What is the function of 1-hydroxylase in Vitamin D activation?
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How is 25-OH D3 primarily transported in the blood?
How is 25-OH D3 primarily transported in the blood?
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Which organ synthesizes calcitriol from 25-OH D3?
Which organ synthesizes calcitriol from 25-OH D3?
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What is the function of DBP in transporting Vitamin D?
What is the function of DBP in transporting Vitamin D?
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'PTH' plays a role in which of the following processes related to Vitamin D?
'PTH' plays a role in which of the following processes related to Vitamin D?
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