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Cell Processes I
| Question | Answer |
|---|---|
| What is passive transport? | Regulating movement of molecules from one side of the membrane to the other without using energy. |
| What is diffusion? | Process by which particles move from a high to low concentration |
| What are examples of diffusion? | Sugar dissolving in coffee |
| What is equillibrium? | When the amount of solute is equal on both sides of the membrane |
| Once equillibrium is reached, do the particles stop moving? | Water transports back and fourth still |
| What is facillitated diffusion? | Process of iffusion in which molecules pass across the membrnae through protein channels |
| Does facillitated diffusion use a protein carrier? | Yes, it has to because some molecules are to big to pas straight through the lipid bilayer. |
| What is osmosis? | Diffusion of water through a selectivly permeable membrane from high concentration to low |
| What is a aquaporin? | Water protein in a cell |
| What is a isotonic enviroment? | When the concentration of water and solute is the same strength on each side of the membrane. |
| What is a hypertonic enviroment? | The solution has a higher solute concentration than the cell. Which causes the cell to shrink. |
| What is a hypotonic enviroment? | The solution has a lower solute concentration than the cell, which causes it to swell |
| What is osmotic pressure? | Pressure that must be applied to prevent osmotic movement across a selectivly permeable membrane |
| What is active transport? | The movement of materials against a concentration gradient and requires energy. |
| What is molecular transport? | Small molecules and ions are carried across membranes by proteins in the membrane that act like pumps |
| What is a protein pump? | Pump small molecules & ions across the cell |
| What is bulk transport? | Larger molecules and clumops of material transported across the cell membrane |
| What is endocytosis? | Is the process of taking material into the cell by infoldings or pockets in the cell membrane. |
| What is phagocytosis? | A type of endocytosis. Where the cell surounds the particle, and engulfs it. |
| What is a example of phagocytosis? | A white blood cell eating a damaged red blood cell. |
| What is pinocytosis? | Cells take up liquid from a surrounding enviroment, Tiny pockets form along the cell membrane and fill with liquid. and then pinch off and form vcuoles inside the cell. |
| What is exocytosis? | The membrane of the vacuole fuses with the cell membrane, and forces the contents out of the cell. |
| What is a example of exocytosis? | The removal of water from a cell by a contractile vacuole. |
Created by:
Gintner47
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