Vitamin A function

Answer 1

• vitamin A combines with a protein called opsintoform rhodopsin in the rod cells of retina of eye. When vitamin is insufficent the lack of rhodospin makes it difficult tosee in dim light.
• It is involved in normal cell differentiation
• Vitamin A supports male and female reproductive processes and bone growth
• It is essential for immune function.

Answer 2

It is the precursor for the various photoreceptor chemicals used in both rod and cone cells.