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The top documents tagged [ap biology channels]
AP Biology 2007-2008 The Cell Membrane AP Biology 2 The Structure of A Cell ALL cells have a cell membrane A thin, flexible barrier around the cell
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AP Biology 2007-2008 The Cell Membrane AP Biology Phospholipids Fatty acid Phosphate Phosphate head hydrophilic Fatty acid tails hydrophobic
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AP Biology 2007-2008 Movement across the Cell Membrane
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