Small hydrophobic molecules and gases like oxygen and carbon dioxide cross membranes rapidly. Small polar molecules, such as water and ethanol, can also pass through membranes, but they do so more ...

We are taught that plasma membranes are a typical lipid bilayer ... the major factor in determining solubility is the similarity in polarity between the solvent and the solute.

Polarization curves for autohumidification PEM fuel cell ... This change corresponds to a condition where the water content in the membrane remains is fixed. There is a longer response that ...