Diffusion - The movement of molecules from high to low concentration without using energy, Plasma/Cell membrane - Sometimes called a "phospholipid bilayer", What is this called? - Phospholipid molecule, Describes the phosphate head in the membrane is described as......... - Hydrophyllic, Describes the lipid tails in the cell membrane is described as...... - Hydrophobic, Concentration gradient - A difference in concentration between two barriers., Selectively/ Semi- permeable - Describes how the membrane lets some molecules in & out, but not all molecules., Equilibrium - Reached when there is an equal concentration of molecules on each side of a membrane., Transport Protein - Figure A, Fluid Mosaic Model - describes the structure of the plasma membrane as a mosaic of components —including phospholipids, cholesterol, proteins, and carbohydrates—that gives the membrane a fluid character., Which part of the phosphoilid is polar? - the phosphate head, Which part of the phospholipid is non-polar? - the fatty acid lipid tails, the prefix cyto- - means CELL,

Cell Membrane Basics

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