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Chapter 3
Cell Structure
| Term | Definition |
|---|---|
| magnification | making an image appear larger than its actual size |
| resolution | the measure of clarity of an image (how clear it is) |
| cell theory | 1. All living cells are made of one or more cells. 2. Cells are the basic unit of life. 3. All cells arise from other cells. |
| cell membrane | cell's outer boundary |
| cytoplasm | cell interior |
| ribosome | produces proteins |
| prokaryote | small, simple cells with NO nucleus |
| cell wall | prokaryotes and PLANT cells only, provides structure and support |
| flagellum | long, threadlike structures that enable movement of the cell |
| eukaryote | complex cells with a nucleus and other organelles |
| nucleus | internal compartment that houses the DNA |
| organelle | a structure in the cell that carries out a specific activity |
| cilium | short, hairlike structures that provide movement to cell |
| smooth ER | produces lipids (fats) and breaks down toxic (poisonous) substances |
| rough ER | has attached ribosomes, transports the proteins that are produced by the attached ribosomes |
| golgi apparatus | packages and distributes the proteins |
| lysosome | contains digestive enzymes (chemicals) |
| mitochondria | produces energy for the cell (ATP) |
| chloroplast | PLANT only, photosynthesis occurs |
| vacuole | stores water, keeps plants rigid |