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Unformatted text preview: mass)/initial mass 3.02 3.78 0.2 3.11 3.25 0.4 2.86 2.51 0.6 2.89 2.27 0.8 2.95 2.16 1.0 3.07 2.20 1. (2 pt) Fill in the table above. Then, construct a graph (with axes correctly labeled) showing the % mass change versus sucrose concentration. Attach the graph to this page. 2. (2 pt) In terms of osmosis, explain why some potato cores gained weight and others lost weight. 3. The osmolarity of the potato would be the sucrose concentration that is isotonic relative to cytoplasm of the potato cells. A. (1.5 pt) What mass change would be equivalent to an isotonic solution? Why? B. (0.5 pt) Based on your graph, what is the osmolarity of potato cells? 4. (2 pt) In lab, you learned that the animal cells have an osmolarity equivalent to 0.9% NaCl. What is the osmolarity of 0.9% NaCl? (Hint: Be sure to read the paragraph at the top of this homework). Show your work....
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- Spring '08
- Plant Cell