1) The outer boundary of the living compartment of every cell. a) Cell Wall b) Cytoplasm c) Cell Membrane 2) A property of cell membranes that ensures only specific substances pass across them a) Self membranibility b) Selective Permeablity c) Selective diffusion 3) the main molecule of which membranes are composed a) Phospholipid b) Fatty acids c) Chloesterol 4) The hydrophilic subunit of a phospholipid a) Phosphate Head b) Fatty acid tails 5) The hydrophobic lipid subunit of a phospholipid a) Fatty acid tails b) Phosphate head 6) Tendency to be attracted to and dissolve in water a) Hydrophobic b) Hydrophilic 7) Tendency to be repel from and insoluble in water a) Hydrophilic b) Hydrophobic 8) The hydrophobic lipid subunit of a phospholipid a) Phosphate Head b) Fatty acid tails 9) Molecule with both a positive end and negative end a) Non Polar b) Polar c) Amphiphatic 10) a steroid-alcohol that regulates fluidity in plasma membranes a) Glycoprotein b) Chloesterol c) Glycolipid 11) The theory of how the plasma membrane is structured a) Sandwich model b) Fluid Model c) Fluid Mosaic Model 12) A protein bound to a carbohydrate a) Glycolipid b) Glycoprotein c) Chloesterol 13) A lipid bound to a carbohydrate a) Glycoprotein b) Glycolipid c) Chloesterol 14) Plasma membrane of cells a) controls the movement of substances in and out of the cell. b) protects the cell. 15) Which organelle is not surrounded by a phospholipid bilayer? a) Mitochondria b) Chloroplast c) Ribosome

Plasma membrane Structure

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