| Term | Definition |
| GLYCOPROTEIN | carbohydrate-attached protein |
| GLYCOLIPID | carbohydrate-attached lipid |
| HYDROPHILIC | soluble in water |
| HYDROPHOBIC | insoluble in water |
| FLUID MOSAIC MODEL | basic membrane structure |
| PHOSPHOLIPID | both hydrophilic and hydrophobic |
| PHOSPHOLIPID BILAYER | forms a strong barrier for the cell |
| ACTIVE TRANSPORT | movement of substances across a membrane using ATP |
| PASSIVE TRANSPORT | passages through center of membrane proteins; each allows one specific substance to pass through without the use of ATP |
| ISOTONIC | equal solute concentrations |
| HYPERTONIC | solution with higher solute concentration than another |
| HYPOTONIC | solutions with a lower solute concentration than another |
| EXOCYTOSIS | cell releases a substance |
| ENDOCYTOSIS | cell takes in a substance by surrounding it with its membrane |
| PHAGOCYTOSIS | endocystosis; taking in solid |
| PINOCYTOSIS | endocystosis; taking in fluid |
| DIFFUSION | movement of particles from an area of higher concentration of lower concentration |
| FACILITATED DIFFUSION | where transport proteins move ions and hydrophilic molecule through a bilayer (membrane) |
| OSMOSIS | movement of water from an area of higher solute concentration across a partially permeable membrane |
| PERIPHERAL PROTEIN | found inside or outside the membrane (hydrophilic) |
| INTEGRAL PROTEIN | embedded in the membrane (hydrophilic ends and hydrophobic middles) |
| TRANSPORT (CHANNEL) PROTEINS | move ions and hydrophilic molecules through the membrane with passageway |
| CARRIER PROTEINS / PROTEIN PUMPS | molecule binds to protein > protein changes shape (ATP) to allow molecule in |