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Supplement notes
Bulk flow, Diffusion, Osmosis, Tonicity, and Filtraion
| Question | Answer |
|---|---|
| Define Bulk flow | all molecules move together in same direction at the same time |
| Bulk flow is caused by...? | -Difference in potential energy. (Always from high potential energy to low potential energy) -Difference in pressure. (Always from high pressure to low pressure) |
| Bulk flow can move large numbers of molecules *blank* distances, *blank* quickly. | Long - Very |
| Define diffusion | random thermal motion |
| The *blank* the molecules are, the faster they move. | warmer |
| The bigger the molecules are, the *blank* they move. | slower |
| Diffusion is the (3 things) | -Net movement of molecules by random thermal motion -From an area of high concentration -To an area of lower concentration |
| Dynamic equilibrium | -net movement of dye molecules will continue until all dye molecules are evenly distributed throughout the test tube |
| At dynamic equilibrium there is *blank* of dye molecules even though there is just as much random thermal motion as before. | no net movement |
| The number of molecules diffusing is proportional to what 2 things? | -the difference in concentration, and surface area across which the molecules can move. |
| How fast does it take diffusion to move large numbers of molecules over SHORT distances? | very quickly |
| How fast does it take diffusion to move large numbers of molecules over LONG distances? | very slowly |
| Osmosis is the (4 things) | -Net movement of water molecules by random thermal motion -From area of greater water concentration -Across a selectively permeable membrane -To area of lesser water concentration |
| define Hyperosmotic | if solution A has more solute particles per liter than solution B, then we say that A is... to B |
| define Hyposmotic | if solution B has fewer solute particles per liter than A, we say B is... to A |
| define Isosmotic | if two solutions have the same solute concentrations, we say they are... |
| define Hydrostatic pressure | is the pressure created by the weight of a column of water pushing down on the bottom of the container. |
| Tonicity | -compares concentration of nonprenetrating solute in solution to nonpenetrating solute concentration in cytoplasm of cell -the solution is always compared to cell. Cell is never compared to solution -refers to condition of cell when cell has reached dyn |
Created by:
rachelcbrinkley
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