Group of retinoids and carotenoids
Vitamin A contains a functional group called a retinyl group, which is a type of alcohol group. This group is important for the biological activity of vitamin A because it allows the molecule to interact with specific proteins in the body, such as retinol-binding protein and cellular retinol-binding protein. These interactions are essential for the transport and utilization of vitamin A in various biological processes, including vision, immune function, and cell growth and differentiation.
Vitamin D is produced in the skin, on exposure to UV (ultravoilet) radiation, from a modified cholesterol molecule; necessary for normal bone growth and function.
The molecule is an electron donating group.
The most common element in a molecule of vitamin D is carbon, which is a fundamental building block of organic compounds. Additionally, vitamin D contains hydrogen and oxygen atoms, contributing to its structure. The specific form of vitamin D, such as vitamin D2 (ergocalciferol) or vitamin D3 (cholecalciferol), may vary slightly in composition but primarily consists of these elements.
The carbonyl group, -COOH, makes a molecule acidic.
Vitamin D is produced by ultraviolet radiation on your skin. The UV light converts a precursor molecule to vitamin D.
Vitamin A is a vitamin that is needed by the retina of the eye in the form of a specific metabolite, the light-absorbing molecule retinal, that is necessary for both low-light and color vision.
VITAMIN
The molecule contains a carboxylic acid functional group.
The methyl group in a molecule is electron donating.
A group of atoms that act as a unit is called a molecule.
Cholesterol