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