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5 Measure 15 ml of the pink phenol red solution and pour into Tube 2...

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Biology

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5 Measure 15 ml of the pink phenol red solution and pour into Tube 2 This tube will be used as a reference for color comparisons 6 Obtain two 8 cm pieces of Elodea Hornwort from the instructor and place one piece into tubes 3 and 4 containing the yellow phenol red solution 7 Use your drinking straw to gently push the plant piece into the phenol red solution until it is completely submerged in the solution 8 Cover the top of each of the four test tubes with parafilm 9 Use aluminum foil to completely all sides top and bottom cover tube 4 containing the Elodea plant to prevent light from reaching the plant Leave the other test tube with the Elodea Hornwort plant uncovered 10 Place all tubes under direct light from the lamp source for 3 hours or overnight and record the color change While you are waiting for the results answer the following questions 1 Write a hypothesis for this experiment 2 In which tube s do you expect to observe a color change What color change are you expecting 3 What will this change in color indicate in terms of utilization of CO and in terms of whether photosynthesis occurred

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