Chapters 2.3 and 2.4
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16 terms
Terms | Definitions |
|---|---|
 cell | basic units of structure and function in living things |
| cell membrane | forms the outside boundary that separates the cell from its environment in cells that lack a cell wall |
| cell wall | a rigid layer of nonliving material that surrounds the cells of plants` |
| cellulose | a nonliving material (wood) that makes up the cell wall |
| chloroplasts | capture sunlight energy and use it to produce food for the cell |
| cytoplasm | the region between the cell membrane and the nucleus |
| endoplasmic reticulum | a maze of passageways which carries material from one part of the cell to anotherr; it may have ribosomes attached to its outside surface |
| golgi bodies | receives materials from the endoplasmic reticulum, packages them, and delivers them to other cell parts or releases them outside the cell |
| lysosome | small rounded structures, (smaller than vacuoles) that contain chemicals that break down waste products, dead cells, and food particles |
| mitochondria | "powerhouses" of the cell - convert energy in the food molecules to energy in the cell |
| organelles | Tiny cell structures that carry out specific functions in the cell |
| nuclear envelope | a membrane that surrounds and protects the nucleus |
| nucleolus | a structure within the nucleus that makes ribosomes |
| nucleus | a large oval structure that directs all the cell's activities |
| ribosomes | functions as factories to produce protein |
| vacuole | a cell storage area - It is largest in plant cells. |
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