| A | B |
|---|
| phospholipid | The main component of the cell membrane |
| Polar Head | The hydrophilic part of a phospholipid |
| Nonpolar Tail | The hydrophobic part of a phospholipid |
| Ion Channel Proteins | Act as pores to passively transport ions through the membrane |
| Transport Proteins | Membrane proteins that carry small polar molecules |
| Glycoproteins | Cell recognition proteins |
| Cholesterol | Maintains fluidity of cell membranes at low temperatures |
| Diffusion | The movement of molecules from concentrated to less concentrated areas |
| Osmosis | The movement of water across a membrane |
| Passive | Any type of cellular transport that does not require energy |
| Active | Any type of transport that requires energy to move molecules across the membrane |
| Facilitated | Diffusion through a membrane protein |
| Endocytosis | Acvtive transport of molecules through a carrier protein |
| Phagocytosis | "Cell eating" |
| Pinocytosis | "Cell drinking" |
| Exocytosis | Secretion or Cellular Excretion |
| Enzymatic Proteins | Membrane proteins that catalyze reactions |
| Receptor Proteins | Membrane proteins that combine with hormones or other cellular chemicals |
| Isotonic | Solutions that have the same concentration gradient as a cell |
| Hypotonic | Solutions that have less solute than a cell |
| Hypertonic | Solutions that have more solutes than a cell |
| Turgor | Internal water pressure in a plant cell |
| Plasmolysis | The loss of water in a plant cell when placed in a hypertonic solution |
