polar head faces ........... cell, inside, outside, The plasma membrane is composed of two layers of............, phospholipids, carbohydrates, ..............proteins move substances and wastes through the membrane, support, transport, ..............is the diffusion of water across a selectively permeable membrane, osmosis, Active transport, solution has the same concentration of water and solutes as the cytoplasm of the cell., isotonic, hypertonic

plasma membrane

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