Which of the following substances would have the most trouble crossing a biological membrane by diffusing through the lipid bilayer?
A. O2
B. CO2
C. Na+
D. a small, nonpolar molecule such as butane (C4H10)
Answer:C
Which of the following substances would have the most trouble crossing a biological membrane by diffusing through the lipid bilayer?
A. O2 B. CO2 C. Na+ D. a small, nonpolar molecule such as butane (C4H10)