| A | B |
|---|
| hypotonic solution | water moves into a cell placed in this solution |
| hypertonic solution | water moves out of a cell placed in this solution |
| fluid mosaic model | polar layers on the outside and a nonpolar layer on the inside |
| selectively permeable | allows passage of some molecules through a membrane faster than others |
| active transport | movement of particles across a membrane requires energy |
| concentration gradient | equilibrium of molecules on both sides of a membrane |
| lipid bilayer | makes up the plasma membrane |
| Brownian motion | random motion of molecules |
| plasma membrane | structure most responsible for maintaining cell homeostasis |
| facilitated diffusion | passive transport of material across a membrane by means of transport proteins |
| endocytosis | process by which a cell membrane surrounds and take in material from the environment |
| passive transport | movement of particles across a membrane does not require energy |
| turgor pressure | internal pressure of a plant cell |
