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Bio Cell Transport
Cell Transport - Bio
| Term | Definition |
|---|---|
| Definition of diffusion | Movement of molecules from high concentration to low concentration |
| Examples of diffusion | Food coloring in water |
| A quality of diffusion | Requires no energy |
| Definition of osmosis | The diffusion fo water across a semi-permeable membrane |
| Membrane | Skin like area near the outside of a cell that is ALWAYS SEMI-PERMEABLE |
| Definition of semi-permeable | Some things can pass through and others can not |
| Definition of hypertonic solution | Solution has higher salt concentration than the cell |
| Definition of hypotonic solution | Solution has lower salt concentration than cells |
| Definition of isotonic solution | Solution has equal salt concentration as cell |
| What happens to a cell in hypotonic state | cell swells - bursts |
| What happens to a cell in hypertonic state | cell shrinks |
| What happens to a cell in isotonic state | cell stays the same |
| Definition of facilitated diffusion | high concentration to low that occurs through transport proteins |
| Definition of passive transport | thrsport of cell particles that requires NO energy |
| Example of facilitated diffusion | glucose (sugar) moves into cells through transport proteins |
| Requirements of active transport | requirements: a transport protein and energy (ATP) |
| Movement of molecules during active transport | molecules move from low to high concentration |
| Definition of endocytosis | large particles are surrounded by the membrane and taken into the cell |
| Movement in endocytosis | membrane pinches off, forms a vacuole |
| Two types of endocytosis | Phagocytosis and pinocytosis |
| Definition of phagocytosis | large molecules taken in, amoebas "eat" this way |
| Definition of pinocytosis | small molecules are taken in during endocytosis |
| Definition of exocytosis | Wastes or proteins are sent to cell surface and released |
| Definition of dynamic equilibrium | large wastes or cell products are released from inside to outside a cell |
| Definition of active transport | the transport of cell particles continue to move but in equal amounts in and out of the cell |
| Quality of plasma membrane | the structure most responsible for maintaining cell homeostasis |
| Phospholipid bilayer | a layer in the plasma cell membrane |
| Three types of passive transport | facilitated diffusion, diffusion, and osmosis |
| One type of active transport | endocytosis |
| Salt concentration in active transport | a cell moves particles from an arc of low salt concentration to high concentration |
Created by:
tobiashersey
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