All of the functions of vitamin A are carried out by retinoic acid via transcriptional mechanisms.

Name: All of the functions of vitamin A are carried out by retinoic acid via transcriptional mechanisms.
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Quizplus · Accepted Answer

Retinoic acid is a metabolite of vitamin A and does play a role in some of its functions, but other functions are carried out by different forms of vitamin A, such as retinol and retinaldehyde. Additionally, vitamin A can act through non-transcriptional mechanisms such as antioxidant activity.

All of the Functions of Vitamin a Are Carried Out