| Term | Definition |
|---|
| cell membrane | The ______ ___________ picks and chooses what can pass through it. |
| bipolar lipid | Made up of many ________ ______ molecules with the heads facing both outside and inside of the cell because they like the watery environment |
| hydrophilic | like the watery environment |
| hydrophobic | dislike water |
| environment | To stay alive, a CELL MUST EXCHANGE materials such as food and waste with its ________________ |
| semipermable | The Cell Membrane is _________________, which means that it only allows certain molecules to pass through |
| Passable | Amino acids, simple sugars, fatty acids, glycerol, gasses [o2, co2], water, salt, wastes |
| in passable | proteins, lipids, starch, blood cells |
| Passive transport | Movement of substances across a cell membrane WITHOUT the need for energy |
| Diffusion | Movement of molecules from an area of high concentration to low concentration, Collide with each other all the time, Collide and spread out |
| Facilitated Diffusion | Specialized transport proteins speed the movement across a membrane, movement of molecules from a high concentration to low concentration |
| Osmosis | Diffusion of WATER across a selectively permeable membrane from a region of high water concentration to a region of low water concentration |
| Isotonic | Solution with same conc. of dissolved substances as the living cell placed in it |
| Hypotonic | Lower conc. of dissolved substances than the cell |
| Hypertonic | Higher conc. of dissolved substances then the cell |
| Active transport | Movement of substances into and out of the cell WITH the need for energy[ATP], Transport proteins bind a substance on one side of the membrane and release it on the other |
| Endocytosis | “inside” “cell” |
| Pinocytosis | “drink” Small amounts of liquid are taken into a cell |
| Phagocytosis | “eating” Solid particles are ingested into the cell |
| Exocytosis | “outside” Movement of materials out of the cell |
Combine with other sets
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