Question

Vitamin A is a fat-soluble vitamin. How would it be transported into a cell for use?

Vitamin A will pass through the plasma membrane to go from outside the cell to inside.
Vitamin A will pass through proteins to go from outside the cell to inside.
Vitamin A will pass through carbohydrates to go from outside the cell to inside.
Vitamin A will pass through amino acids to go from outside the cell to inside.

Answer 1

Answer: Vitamin A will pass through proteins to go from outside the cell to inside.

Answer 2

Answer: Vitamin A will pass through proteins to go from outside the cell to inside.

Vitamin A is lipophilic for they are fat-soluble vitamins that are solubilized and transported by proteins to go from outside to the inside of the cell to exert their actions and be properly metabolized. Moreover, vitamin A and its derivatives are called retinoids that binds to proteins, which act as chaperones that regulate the metabolism, signaling and transport of retinoid in the blood.