| Term | Definition |
|---|
| diffusion | net random movemetn of particles from an area of higher concentration to an area of lower concentration eventualy resulting in even distribution |
| dynamic equilibrium | result of diffusion where there is continuous movement of particles but no overall change in concentration |
| hydrogen bond | weak chemical bond formed by the attraction of positively charged hydrogen atoms to other negatively charged atoms |
| polar molecule | molecule with an unequal distribution of charge resulting in the molecule having a positive and a negitive end |
| fluid mosaic model | structural model of the cell (plasma) membrane where molecules are free to move sideways within a lipid bylayer |
| phospholipid | lipids with an attached phosphate group;cell(plasma)membranes are composed of phospholipids bylayers with embeded proteins |
| cell (plasma) membrane | flexible boundary between the cell and its environment allows material such as water and nutrients to enter and waste products to leave |
| selective permeability | feature of the plasma membrane that maintians homeostasis within a cell by allowing some molecules into the cell while keeping others out |
| transport proteins | proteins that span the cell (plasma) membrane creating a selectivly permeable membrane that regulates which molecules enter and leave the cell |
Combine with other sets
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