| A | B |
|---|
| hormone | acts as a messenger |
| endocytosis | carries molecules that are too large to be transferred by other forms of transport |
| head with two tails | the shape of a phospholipid molecule |
| facilitated diffusion | glucose often passively moves this way; through |
| a phospholipid's head | is polar |
| homeostasis | maintaining constant, stable internal body conditions |
| solute | substance that is dissolved in another substance |
| semipermeable | membrane that only allows certain materials through |
| water | most common solvent in cells |
| chemiosmosis | uses the active transport of protons to make ATP |
| a phospholipid's tail | is nonpolar |
| solvent | substance that dissolves another substance |
| solution | the combination of solute + solvent |
| coupled channels | "lets a couple of things in" works with sodium potassium pump |
| 3 ways receptors act | can open channels, act as enzyme, or act as a 2nd messenger |
| proton pumps are in the | mitochondria and chloroplasts |
| lipid bylayer is held together by | the puching & pulling of water molecules |
