In General Water Soluble Molecules Diffuse Through the
Asked Sep 26 2016 in Anatomy Physiology by Nedarissa. Lipid-soluble substances pass through the membrane by dissolving in the lipid bilayer. Membranes Teaching Biology Membrane Nursing Study Membrane channels lipid bilayer. . In contrast water and alcohols permeate most membranes in less than a second. Anatomy and Physiology questions and answers. Carrier proteins membrane channels. They are often selectively permeable to certain substances 2. In general the smaller the molecule and the more soluble it is in oil the more hydrophobic or nonpolar it is the more rapidly it will diffuse across a lipid bilayer. All molecules are moved across by active transport. Membrane channels membrane channels. Small uncharged polar molecules such as H2O also can diffuse through membranes but larger uncharged polar molecules such as glucose cannot. The interior lipid layer tails is about two layer thick it is non-polar.
