| A | B |
|---|
| Active | transport that uses ATP |
| Adhesion | type of cell junction; attached to cytoskeleton; stretches |
| Brownian | molecular movement |
| Carrier | type of membrane protein that combines with a specific molecule |
| Cell recognition | membrane protein that helps the body recognize self versus non-self |
| channel | type of membrane protein that allows a particular molecule free passage |
| cytoskeleton | proteins that provide stability to the membrane |
| diffusion | movement due to molecular movement from higher to lower concentration |
| enzyme | protein that catalyzes a reaction |
| equilibrium | state of uniform distribution |
| exocytosis | release of a substance by a cell |
| facilitated | type of diffusion which uses proteins; passive |
| filtration | separation by hydrostatic (water) pressure |
| fluidity | allows components to move |
| gap | type of cell junction which allows communication between cells |
| gradient | difference in concentrations on either side of a membrane |
| hypertonic | more solute on one side of membrane than the other |
| hypotonic | more water outside relative to inside a cell |
| impermeable | nothing passes through |
| integra | proteins embedded in lipid bilayer |
| isotonic | same on both sides of membrane |
| junctions | points of contact between cells |
| membrane | universal feature of all cells |
| osmosis | movement of water through a selectively permeable membrane along a concentration gradient |
| passive | transport that requires no energy |
| peripheral | proteins on either side of membrane; do not penetrate lipid bilayer |
| permeable | everything goes through |
| phagocytosis | cell eating |
| phospholipids | make up most of the membrane |
| pinocytosis | cell drinking |
| plasmodesmata | cell junction found in plants |
| plasmolysis | a plant cell that has lost water; in a salty solution |
| receptor | membrane protein that binds with a specific molecule |
| receptor mediated | type of endocytosis which uses receptor proteins in the membrane to bring quantities of a substance into the cell |
| selectively permeable | allows certain substances to pass through; cell decides |
| semipermeable | some substances can pass through |
| tight | type of cell junction which joins cells very tightly; forms a barrier |
| tonicity | ability of a solution to change the shape of cells by altering internal water volume |
| turgid | a plant cell full of water; stiff |
| wall | modification outside the membrane; found in plants |
