The Main Active Form of Vitamin D in the Body

question 19

Multiple Choice

The main active form of vitamin D in the body is

• A)calcitriol.
• B)retinal.
• C)cholecalciferol.
• D)calcitonin.

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Definitions:

Carbon Dioxide

A colorless, odorless gas produced by burning carbon and organic compounds and by respiration, absorbed by plants in photosynthesis.

Oxygen

A chemical element with symbol O and atomic number 8, essential for most forms of life on Earth, particularly as a component of the air we breathe.

Calcium Hydroxide Experiment

A scientific experiment typically involving the use of calcium hydroxide, a compound with formula Ca(OH)2, to explore its chemical properties or reactions.

CO₂

Carbon dioxide, a colorless, odorless gas produced by burning carbon and organic compounds and by respiration. It is absorbed by plants in photosynthesis.