Question

which is a task of retinoic acid?
a. supports reproduction
b. is the primary transport and storage form of vitamin a
c. is active in vision
d. regulates cell differentiation, growth, and embryonic development

Explanation:

• Option a: Supporting reproduction is not a main task of retinoic acid.
• Option b: The primary transport and storage form of vitamin A is retinol and retinyl esters, not retinoic acid.
• Option c: The form of vitamin A active in vision is retinal, not retinoic acid.
• Option d: Retinoic acid plays a crucial role in regulating cell differentiation, growth, and embryonic development.

Answer:

d. Regulates cell differentiation, growth, and embryonic development