Question

cholecalciferol what is cholecalciferol? calcitonin inactive vitamin d parathormone active vitamin d

Explanation:

Cholecalciferol is also known as vitamin D3. It is an inactive form of vitamin D that is synthesized in the skin upon exposure to ultraviolet - B (UV - B) radiation or obtained from dietary sources. It needs to be further metabolized in the liver and kidneys to become the active form of vitamin D.

Answer:

Inactive vitamin D