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Cells and Diffusion
Part A:
| Term | Definition |
|---|---|
| Nucleus | In both cells, like the brain of the cell, controls all activities of the cell; growth and reproduction |
| Cell Membrane | In both cells, like a filter, Allows certain molecules to go in or out of the cell Molecules diffuse in or out of a cell made up of 2 Phosphorus layers interconnected |
| Cell Wall | In plant cells, like a brick wall Supports and protects the cell; does not allow molecules in or out at all |
| Chromosomes | In both cells, like DNA Proteins that contain DNA which has coded information for making molecules |
| Rough Endoplasmic Reticulum | In both, like a factory Produces and stores proteins |
| Smooth Endoplasmic Reticulum | In both cells, like a factory Produces and stores fats and oils |
| Golgi Bodies | In both cells, Kind of like a repackaging system Modifies and packages proteins from the Rough Endoplasmic Reticulum with enzymes |
| Ribosomes | In both cells, like the guy operating the factory Helps Rough Endoplasmic Reticulum make proteins Is attached to the Rough Endoplasmic Reticulum |
| Cebtruikes | In animal cells, like a spider web Help with cell division (mitosis) Spindle fibers come from centrioles |
| Mitochandria | In both cells, like the powerhouse of the cell Converts sugar into energy for the cell |
| Cytoplasm | In both cells, like a pool of water Fluid in the cell; allows organelles to move around |
| Vacuole | In both cells, like a water tower Stores water, minerals and vitamins Much bigger in plant cells |
| Lysosomes | In animal cells, like an executioner or garbage man Breaks down food, invading bacteria and old-damaged organelles |
| Cloropasts | In plant cells, like a solar panel Uses sunlight to make its own food Photosynthesis CO2+H2O+Light -->Sugar_O2 |
| Diffusion | Particles moving from an area of high concentration to an area of low concentration |
| Osmosis | Diffusion but with water |
| Permeable | Allows any molecule to diffuse across membrane |
| Semi-Permeable | Allows certain molecules to diffuse across membrane Ex, Cell Membrane |
| Non-Permeable | Allows no molecules to diffuse across membrane Ex. Cell Wall |