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cell transport
| Term | Definition |
|---|---|
| Passive Transport | require no extra energy as molecules move down the concentration gradient, |
| Active transports | require extra energy to move molecules against the gradient. |
| Simple Diffusion | a process that moves molecules across a cell membrane using proteins |
| Osmosis | water across the cell membrane Water moves from areas of high water concentration (meaning low solute %) to areas of low water concentration (meaning high solute %) until equilibrium is reached |
| Hypertonic solutions | water % is lower than the cell’s cytoplasm. Net movement of water out of cell 🡪 Cell shrivels |
| Hypotonic solutions | water % is higher than the cell’s cytoplasm. Net movement of water into a cell 🡪 Cell swells |
| Isotonic solutions | identical water % to cell’s cytoplasm 🡪 Cell stays the same |
| Molecular Pumps | When a cell uses energy to pump molecules across the membrane, against the gradient, through a protein channel. |
| Endocytosis | uses vesicles to move large particles into the cell. |
| Exocytosis | uses vesicles to export materials out of the cell. |
| What transports are passive ? | Facilitated Diffusion and Osmosis |
| what transports are active ? | Molecular Pumps , Endocytosis and Exocytosis |
| what type of solution are part of osmosis ? | Hypertonic ,Hypotonic and Isotonic |