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Cell Membrane
Term | Definition |
---|---|
Fluid Mosiac | A model that refers to how the lipid bilayer acts more like a liquid than a solid. Also, has proteins. |
Active Transport | Energy Needed. Low to High concentration. Material moving through a protein channel. |
Passive Transport | No Energy needed. High to Low concentration. Includes- Osmosis, Diffusion, and Facilitated Diffusion. |
Diffuion | High to Low movement of molecules. No Energy. |
Osmosis | Diffusion of water from an area of High concentraion to an area of Low concentration. |
Endocytosis | Materials entering cells. ( ENdocytosis) |
Exocytosis | Materials exiting cells. ( EXocytosis) |
Hydrophobic | Substance that resists dissolving in water. |
Hydrophilic | Mixes with water. |
Isotonic | No change in cell shape. Describes a solution whose solute concentration is equal to the solute concentraion inside the cell. |
Phospholipid | Molecule that makes up the bilayer of biological membranes. |
Hypotonic | Solute concentration is lower than the solute concentraion inside the cell. ( LOW ) |
Hypertonic | Solute concentraion is higher than the solute concentaion inside the cell. ( HIGH ) |
Protein Channel | Passes large molecules that can't go through the membrane. It is like a channel that has a path for larger molecules to go through. |
Facilitated Diffusion | Passive Transport. Uses transport proteins to move substances down the concentration gradient. |
Concentration Gradient | Substances moving from High to Low areas. |
Solution | Solutes dissolved in solvents. |
Solute | Substance dissolved in a solution |
Solvent | In a solution, substance dissolves in solutes. |