Diffusion and Osmosis 0% iodine solution fills a cellulose bag. How would you re

Question

Diffusion and Osmosis 0% iodine solution fills a cellulose bag. How would you remove essentially all the iodine while leaving the water in the bag? Diagram your setup and describe your procedures BETACYANIN AND BEET ROOT CELLS the hypothesis to be tested Indicate the presence (+) or absence (0) of betacyanin in the fluid of: Tube l 0 Tube 2 _+ _ Tube 3-4 Explain what happened to the cells to give these results Tube 1 Tube 3 Do the results support the hypothesis? e a conclusion from your results. the meaning of "selective permeability" of plasma membeanes 6. OSMOSIS AND CONCENTRATION GRADIENTS a. State the hypothesis to be tested. b. What is the independent variable? the sucrose concentration and the distance the fluid rose in each osmometer tube during a 30-min interval Distance Tube 1: % sucrose- Tube 2: % sucrose Distance

Explanation / Answer

5c. Yes, the results do support the hypothesis.

5d. Presence of betacyanin disturbs normal absorption of water by destroying membrane of root cells.

Thus, presence of external substance makes a difference.

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