Which of the following molecules is the most likely to diffuse across a cell membrane? A) Glucose B) Na⁺ C) A steroid D) A common amino acid E) Cl^-

Question

Quizplus · Accepted Answer

Steroids are non-polar molecules that are very small in size, which makes them highly permeable to pass through the cell membrane. Glucose, common amino acid, and Cl- ion are polar molecules and, therefore, require specific transport mechanisms to move across the cell membrane. Na+ and ⁺ are ions that are charged, which makes them difficult to cross the lipid bilayer of the cell membrane.

Which of the Following Molecules Is the Most Likely to Diffuse