c05a02 Passive Transport - Osmosis
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1.  Continue your adventure as a Bionaut by completing the following story.   *
12 points
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concentration
less
passive
isotonic
facilitated
diffusion
more
transport
energy
out of
osmosis
hypertonic
2.  Osmosis is an important process that has many effects on living things. Test your understanding of osmosis by predicting in each of the following cases whether water will enter the cell, or leave the cell, or whether there will be no net movement of water. Assume that the plasma membrane is permeable to water but not solutes.   *
10 points
Enter the cell
Leave the cell
No net movement of water
Single-celled organism is placed in drop of pure water for examination under microscope.
Cell is exposed to hypotonic solution.
Cell is immersed in solution of sucrose and glucose whose individual concentrations are less than concentration of solutes in cytoplasm, but whose combined concentration is greater than concentration of solutes in cytoplasm.
Cytoplasm more dilute than surrounding solution.
Cell is exposed to hypertonic solution.
Solute concentration of cell is greater than solute concentration of surrounding fluid.
Cell is in isotonic solution.
Cell is placed in salt solution whose concentration is greater than cell contents.
Concentration of solutes in cytoplasm is equal to solute concentration of extracellular fluid.
Due to disease, solute concentration of body fluid outside cell is less than solute concentration of cells.
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