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Bush won a second term in 2004 by defeating
Phospholipids
A class of lipids that are a major component of all cell membranes, as they can form lipid bilayers.
Bilayer
Often refers to the lipid bilayer, a thin polar membrane made of two layers of lipid molecules, forming the basic structure of cell membranes.
Permeable Barrier
A structure or material that allows the passage of particles, such as liquids or gases, through itself while blocking others, based on size, shape, or other properties.
Plasma Membrane
A bi-layer of lipids and proteins surrounding a cell, regulating the passage of substances in and out of the cell.
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