Zusammenfassung der Ressource
Cell Tranport
- Cell structure
- Maintains homeostasis by
controlling what can enter
and leave a cell
- Phospholipid Bilayer
- Hydrophilic
- Polar
- Water loving
- Hydrophobic
- Nonpolar
- Water hating
- Semi-permeable
- Concentration Gradient
- Passive transport
- Simple diffusion
- Movement from high
concentration to low
concentration
- EX: Air freshener
- Facilitated diffusion
- Movement of LARGE
substances from high
concentration to low
concentration
- Carrier proteins
- Channel proteins
- Osmosis
- Movement of water going
WITH the concentration
gradient
- Hypertonic
- More salt outside the
cell
- cell SHRINKS
- HYPER VIPER
- Hypotonic
- More salt inside the cell
- cell
SWELLS
- HYPO
HIPPO
- Isotonic
- Equal amount of salt on
both sides of the
membrane
- Equilibrium
- Active
transport
- Movement of substances
AGAINST the
concentration gradient
- Requires ATP
- Pump
- Protein used to
transport into and out
of the cell
- EX: Sodium Potassium Pump
- Vesicles
- Endocytosis
- moves INTO the cell
- Exocytosis
- moves OUT of the cell