Osmosis/diffusion
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12 terms
Terms | Definitions |
|---|---|
 active transport | the movement of materials through a cell membrane using energy |
| passive transport | The movement of materials through a cell membrane without using energy |
| photosynthesis | process by which plants use the sun's energy to convert water and carbon dioxide into sugars |
| respiration | The process by which cells break down simple food molecules to release the energy they contain. |
| diffusion | the movement of molecules from an area of higher concentration to an area of lower concentration |
| isotonic | describes a solution whose solute concentration is equal to the solute concentration inside a cell |
| hypertonic | describes a solution whose solute concentration is higher than the solute concentration inside a cell |
| hypotonic | describes a solution whose solute concentration is lower than the solute concentration inside a cell |
| semi-permeable | membranes that allow some substances through but not others |
| osmosis | diffusion of water through a selectively permeable membrane |
| It shrinks | What happens to a cell placed in salt water? |
| It swells | What happens to a cell placed in fresh water? |
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