Question:
Inactive form of calciferol is:
Inactive form of calciferol is:
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Calcitriol is the active form of Vitamin D responsible for calcium absorption.
Updated On: Jun 19, 2026
- Prorenin
- Cortisol
- Calcitriol
- Adrenalin
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The Correct Option is C
Solution and Explanation
Step 1: Understand vitamin D metabolism.
Vitamin D (calciferol) undergoes activation in liver and kidney to form its active hormone.
Step 2: Identify inactive precursor.
The inactive form of vitamin D in circulation is calciferol/cholecalciferol before activation.
Step 3: Conversion process.
Cholecalciferol is converted to calcidiol in liver and then to calcitriol in kidneys.
Step 4: Evaluate options.
Calcitriol is the biologically active form, while other options are unrelated hormones.
Step 5: Identify exam convention.
The calcitriol as the functional final active form contrasted with inactive precursor concept.
Step 6: Conclusion.
Thus, option (3) is correct
Vitamin D (calciferol) undergoes activation in liver and kidney to form its active hormone.
Step 2: Identify inactive precursor.
The inactive form of vitamin D in circulation is calciferol/cholecalciferol before activation.
Step 3: Conversion process.
Cholecalciferol is converted to calcidiol in liver and then to calcitriol in kidneys.
Step 4: Evaluate options.
Calcitriol is the biologically active form, while other options are unrelated hormones.
Step 5: Identify exam convention.
The calcitriol as the functional final active form contrasted with inactive precursor concept.
Step 6: Conclusion.
Thus, option (3) is correct
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