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8thGradeBiologyterms
| Question | Answer |
|---|---|
| Phospholipid bilayer | – occurs in cell membranes; the interaction between hydrophilic and hydrophobic ends of a phospholipid molecule that result in the formation of a barrier in the cell. |
| Hydrophobic | “water fearing” which refers to the tail end of a phospholipid molecule. This tail end will not mix with water and repels interactions with water. Synonym: non-polar |
| Hydrophilic | “water loving” which refers to the head end of a phospholipid molecule. This head end will mix with water and repels interactions with nonpolar lipids. Synonym: polar |
| Osmosis | the movement of water across a membrane from an area of high water concentration to an area of low water concentration. Example: water moving out of a leaf (or plant cell) that is placed in salt water. |
| Diffusion | the random movement of particles through a substance from an area of high concentration of particles to an area of low concentration of particles. Examplespray perfume in the corner, the particles diffuse throughout the air& mixevenly throughouttheroom. |
| Solute | the substance that gets dissolved when making a solution. |
| Solvent | the substance that does the dissolving when making a solution. |
| Hypertonic | referring to a solution in which there is a high solute concentration. |
| Hypotonic | referring to a solution in which there is a low solute concentration. |
Created by:
rhammock15
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