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Cells Unit
Key Vocabulary for the Cells Unit
| Term | Definition |
|---|---|
| cells | the units that all living things are made of |
| cell membrane | a thin, flexible covering that gives the cell shape and allows food, water, and gases to enter the cell and waste to exit |
| cell wall | a stiff structure outside the cell membrane that gives plant cells structure and extra strength |
| cytoplasm | a gel-like material that surrounds the internal parts of a cell |
| organelles | a structure that has a specific task within the cell |
| nucleus | the control center of the cell that tells the cell and organelles what to do |
| chloroplasts | an organelle found in plant cells that makes food from sunlight, water, and carbon dioxide |
| microscope | an instrument or tool used to look at very small objects |
| magnification | the action of making something appear larger or magnified |
| structure | the way something is put together or organized |
| function | the basic task that something is assigned to do |
| mitochondria | an organelle that provides energy to the cell also known as the cell's power plant |
| vacuoles | an organelle that stores water, food, and waste until the nucleus tells it to release whatever it is storing |
| photosynthesis | the process in which plant cells change sunlight into energy |
| chlorophyll | the chemical inside the chloroplasts that is used to change energy from sunlight into food |
| single cell | an organism made of one cell |
| multi-cellular | an organism made of more than one cell |
| *diffusion | process that spreads substances through a gas or liquid |
| *transportation | the action of moving something from one place to another |
| *osmosis | a type of diffusion that allows water to pass a barrier, but bars other substances |
| *Golgi bodies | an organelle that helps transport the cell |
| *permeable | allowing liquids or gases to pass through |
| *specialized cells | cells that have a specific job or tasks |
| *prokaryotic | a single-celled organism that does not have a nucleus |
| *eukaryotic | an organism that cells contain a nucleus and other organelles |
Created by:
stiller5
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