BIOL
BIOL 1005 Quiz 6 Spring 2016 Key (1)

BIOL 1005 Quiz 6 Spring 2016 Key (1) - BIOL 1005 Quiz 6...

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BIOL 1005 Quiz 6 Name____________________________ Spring 2016 Section______________________ 1. T /F During osmosis, water moves from an area of high solute concentration to an area of low solute concentration. 2. Name 2 properties of a molecule which determine its ability to cross cell membranes. Size, Shape, Charge/Polarity Match the following descriptions of the extracellular solution with the correct definition: 3. Isotonic__ A___ A . Concentration of salt is the same on the outside and inside of the cell 4. Hypertonic_ _B ___ B . Concentration of salt is greater outside the cell than inside the cell 5. Hypotonic _C____ C . Concentration of salt is greater inside the cell than outside the cell
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Unformatted text preview: 6. You make solutions isotonic to Red blood cells. One contains only NaCl and one contains only ethylene glycol. Red blood cells are placed in the two solutions. The RBCs in the ethylene glycol swell and burst, while the RBCs in the NaCl do not change. Explain why the RBCs in the ethylene glycol burst while those in the NaCl didn’t. Ethylene glycol caused hemolysis. The mechanism of hemolysis requires that the solute moves across the membrane. There, the cell membrane must be permeable to ethylene glycol. Since no change was seen in the NaCl solution, the membrane must not be permeable to NaCl....
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