Bulk flow, Diffusion, Osmosis, Tonicity, and Filtraion
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each of the black spaces below before clicking
on it to display the answer.
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| Define Bulk flow | all molecules move together in same direction at the same time
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| 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)
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| Bulk flow can move large numbers of molecules *blank* distances, *blank* quickly. | Long - Very
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| Define diffusion | random thermal motion
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| The *blank* the molecules are, the faster they move. | warmer
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| The bigger the molecules are, the *blank* they move. | slower
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| 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
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| Dynamic equilibrium | -net movement of dye molecules will continue until all dye molecules are evenly distributed throughout the test tube
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| At dynamic equilibrium there is *blank* of dye molecules even though there is just as much random thermal motion as before. | no net movement
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| The number of molecules diffusing is proportional to what 2 things? | -the difference in concentration, and surface area across which the molecules can move.
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| How fast does it take diffusion to move large numbers of molecules over SHORT distances? | very quickly
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| How fast does it take diffusion to move large numbers of molecules over LONG distances? | very slowly
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| 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
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| define Hyperosmotic | if solution A has more solute particles per liter than solution B, then we say that A is... to B
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| define Hyposmotic | if solution B has fewer solute particles per liter than A, we say B is... to A
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| define Isosmotic | if two solutions have the same solute concentrations, we say they are...
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| define Hydrostatic pressure | is the pressure created by the weight of a column of water pushing down on the bottom of the container.
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| 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
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Created by:
rachelcbrinkley
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