Which of the Following Represents How Easily the Molecules Cross

Multiple Choice

Which of the following represents how easily the molecules cross a synthetic membrane composed of phospholipids but not proteins, from most easily (freely permeable) to least easily (not permeable) ?

A) hydrophobic molecules, ions, small polar molecules, large polar molecules
B) hydrophobic molecules, small polar molecules, large polar molecules, ions
C) ions, large polar molecules, small polar molecules, hydrophobic molecules
D) small polar molecules, large polar molecules, ions, hydrophobic molecules
E) large polar molecules, small polar molecules, hydrophobic molecules, ions