Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
bio12-Cell transport
SLS Bio 12 Cell Transport
| Term | Definition |
|---|---|
| active transport | use of a plasma membrane carrier protein and energy to move a substance into or out of the cell from lower to higher concentration. |
| carrier protein | Protein molecule that combines with a substance and transports it through the plasma membrane. |
| cell membrane | made up of a phospholipid bilayer and imbeded proteins. Provides structure and separates that internal cell from the external enviroment around the cell. |
| channel protein | Forms a channel that allows a paticular molecule or ino to cross the plasma membrane |
| concentration gradient | Gradual chane in chemical concentration from one point to another. |
| diffusion | movement of molecules or ions from a region of higher to lower concentrations , it requires no energy and stops when the distribution is equal |
| endocytosis | process when substances are moved into the cell from the enviroment by phagocytosis or pintocytosis |
| exocytosis | process when a intercellular vesicle fuses with the plasma membrane so that the vesicles contents are released outside the cell |
| facilitated transport | use of a plasma membrane carrier to move a substance into or out of thecell from higher to lower concentration, where no energy is required |
| fluid-mosaic membrane model | model for the plasma membrane based on the changing location and pattern or protein molecules in a fluid phospholipid bilayer |
| glycolipid | LIpid in plasma membrane that bears the carbohydrate chain attached to a hydrophobic tail |
| glycoprotein | Protein in plasma membrane that bears the carbohydrate chain |
| hydrophilic | Type of molecule that interacts with water by dissolving in water and/ or forming hydrogen bonds with the water molecules |
| hydrophobic | Type of molecule that does not interact with water because it is nonpolar |
| hypertonic (solution) | Higher solute concentration that the cell causes cell to lose water by osmosis |
| hypotonic (solution) | Lower solute concentration that the cytosol of the cell, causes that cell to gain water by osmosis |
| isotonic(solution) | Solution that is equal in solute concentration to that of the cell , causes cell to neither lose or gain water by osmosis |
| osmosis | Diffusion of water through a selectively permeable membrane |
| passive transport processes | movement of particles from high to low concentration, without using energy |
| phagocytosis | Process by which amoeboid type cells engulf large substances, forming an intracellular vacuole |
| phospholipid | Molecules that form the bilayer of the cells membranes; has a polar, hydrophilic head bonded to two nonpolar, hydrophobic tails |
| phospholipid bilayer | The two layers of phospholipids that arrange in a way that their hydrophopic tails are inward and phospholipd heads are outward. |
| pinocytosis | ocess of taking in fluid together with its contents into the cell by forming narrow channels through its membrane that pinch off into vesicles, and fuse with lysosomes that hydrolyze or break down contents. |
| pressure gradient | The change in pressure measured across a distance |
| selectively permeable | The plasma membrane can be selectively permeable if they let through only certain substances and particles |
| tonicity | refers to the strength of the solution in our around cells. |
Created by:
StephanieAvery
Popular Biology sets