Ch. 3 Key Terms
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22 terms
Terms | Definitions |
|---|---|
 Cytoplasm | everything between the cell and the nucleus |
| Isotonic | the concentration of solutes inside and outside the cell is equal |
| Cilia | short, hairlike projections for locomotion |
| Microtubules | hollow tubes, like plumbing pipes that maintain the shape o the cell and serve as tracks for organelles to move |
| Osmosis | the diffusion of water across a semipermeable membrain |
| Endoplasmic | place where poisons, wastes, and other chemicals are made harmless |
| Mitochondria | the "power-house" of the cell |
| Cytoskeleton | maintains the 3D structure of the cell and helps the cell move |
| Phagocytosis | sometimes called cell drinking |
| Hypotonic | concetration of solutes inside the cell is greater than the concetration for solutes outside the cell |
| Membrane | only allows certain molecules to pass through |
| Nucleoli | make ribsomes, which, in turn, build protien |
| Organelles | stuctures the work like miniature organs, carrying out specific functions in the cell |
| Pinocytosis | a process where a cell engulfs a food particle instead of a drop of liquid |
| Chromosomes | in the nucleus cantain coded "blueprints"that control all celular activity |
| Prokaryotes | organisms whose cells never contain a nucleus |
| Suspended | the cytosol are tiny organelles |
| Gradient | the difference between the concetration of a particular molecule in one area and the concentration in an adjacent area |
| Diffusion | the net movement of molecules from an area of higher concetration to an area of lower concetration |
| Ribosomes | makes protiens |
| Hypertonic | the concetration of solutes outside the cell is higher than the concetration of solutes inside the cell |
| Active | process in which energey is used to transport molecules across the membrane |
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