Which of the following molecules is most likely to cross the cell membrane directly by passive diffusion?

Question

Quizplus · Accepted Answer

Steroid hormones are hydrophobic (nonpolar) molecules, which allows them to easily cross the lipid bilayer of the cell membrane through passive diffusion. Other molecules listed, like sugars, ions, and polypeptides, are polar or large and typically require specific transport mechanisms to cross the membrane.

Which of the Following Molecules Is Most Likely to Cross