| A | B |
|---|
| osmosis | The diffusion of water through a membrane |
| diffusion | The movement of solutes through a membrane |
| facilitated diffusion | Diffusion through an open "tunnel" protein |
| endocytosis | formation of a pocket in cell membrane to take in food particles |
| phospholipid bilayer | makes up most of the cell membrane |
| embedded proteins | proteins stuck into the bilayer |
| tunnel proteins | proteins stuck in the bilayer that function as passages through |
| glycoproteins | proteins attached to the outside with carbohydrate "flags" attached |
| semipermeable | Means some solutes can pass through while others are blocked |
| CO2 | This solute diffuses out of animal cells |
| O2 | This solute diffuses into animal cells |
| H2O | This solvent diffuses in and out of cells |
| large molecules | These solutes cannot get through the phospholipid bilayer |
| food molecules | These molecules are "captured" by pockets made in the cell membrane |
