Cell membranes protect ... and two fatty acid chains. Glycerol is a three-carbon molecule that functions as the backbone of these membrane lipids. Within an individual glycerophospholipid, fatty ...

In order to provide a cell with energy, these molecules have to pass across the cell membrane, which functions ... of an intermediate known as lactic acid, which can cause a person's muscles ...

Polymer electrolyte membrane (PEM) fuel cells employ a polymer membrane with acid side groups to conduct protons from ... The low water activity region is blown up in the insert at the upper left.

into the red blood cells to be carried around the body. Osmosis close osmosisThe movement of water molecules across a selectively permeable membrane from a region of higher water concentration to ...

Credit: Technology Networks. While prokaryotic cells do not have membrane-bound structures, they do have distinct cellular regions. In prokaryotic cells, DNA bundles together in a region called the ...