| A | B |
|---|
| hydrophilic molecule | phosphate head |
| hydrophobic molecule | lipid tails |
| composition of membrane bilayer | phospholipid and protein |
| allows passage of only certain molecules | semi-permeable |
| serve as "ID" tags or receptors on cell membranes | protein molecules |
| does not require cellular energy | passive transport |
| requires the expenditure of ATP | active transport |
| diffusion of WATER through a semi-pernmeable membrane | osmosis |
| separation of smaller solutes from larger solutes | dialysis |
| movement of molecules from higher to lower PRESSURE | FILTRATION |
| cell "eating" | phagocytosis |
| cell "drinking" | pinocytosis |
| crenation | shrinking of a red blood cell |
| hemolysis | bursting of a RBC due to water intake |
| hypertonic | solution with greater SOLUTE |
| hypotonic | solution with less SOLUTE |
| isotonic | solution with an equal amount of SOLUTE |
| "fluid mosaic" hypothesis | explains the structure of a plasma membrane |
| carrier proteins | "ferry" molecules across a membrane using ATP |
