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Biology - Unit 3
Cell Transport
Question | Answer |
---|---|
A substance that is dissolved in another substance. | Solute |
A liquid in which something is dissolved | Solvent |
Movement of ions or molecules across the cell membrane into a region of higher concentration (requires energy) | Active transport |
Barriers that allow some things to pass through, but not all things. | Semi-permeable OR selectively permeable membranes |
A type of diffusion that uses carrier proteins in the cell membrane to help move large molecules into/out of cells. | Facilitated diffusion |
TRUE or FALSE: Passive transport (diffusion, osmosis, facilitated diffusion), requires energy in order to occur. | FALSE |
TRUE or FALSE: Active transport (endocytosis, exocytosis), requires energy in order to occur. | TRUE |
The process of moving molecules INTO the cell by engulfing them (requires energy). | Endocytosis |
The process of releasing molecules OUT of the cell through the fusion of a cell vacuole with the cell membrane (requires energy). | Exocytosis |
A type of endocytosis that involves extensions of the cytoplasm reaching out to surround a molecule and bring it into the cell. | Phagocytosis |
A type of endocytosis that involves forming pockets in the cell membrane to suck liquids and other particles into the cell. | Pinocytosis |
Solution in which the concentrations are the same inside the cell as they are outside of the cell. | Isotonic |
Solution in which water leaves the cell because the concentration of water inside the cell is greater than it is outside of the cell. | Hypertonic |
Solution in which water enters the cell because the concentration of water outside the cell is greater than it is inside of the cell. | Hypotonic |