Each form of vitamin A is involved in the prevention of night blindness,except one.Which is the exception?

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Quizplus · Accepted Answer

Retinoic acid is the form of vitamin A involved in the development of teeth,especially the formation of ameloblasts in enamel and odontoblasts in dentin along with growth of bone.The remaining selections are involved in preventing ocular (eye)diseases.Retinol is converted into retinal in the eye.Retinal combines with opsin,a protein in the eye,to form the visual pigment,rhodopsin.Inadequate vitamin A may prevent rhodopsin production and result in night blindness.Opsin is a protein in the eye.

Each Form of Vitamin a Is Involved in the Prevention