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Control Tasting Paper Experiment

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The material for this experiment will be: Control tasting paper (tasteless), 0.003 mg per PTC strip, 0.007 mg per PTC strip, water, small medicine cups for tasting, larger medicine cups for rinsing, tower papers and dark chocolate (72%).
This experiment demands 24 students in the Genetics Lab class. Students are going to be asked the level of bitterness in 3 different PTC exponents: 0.003 mg per PTC strip, 0.007 mg per strip and dark chocolate (72%). Levels are from 0-5, (0 being least bitter-5 being extremely bitter). Student will be asked about the level of bitterness separately.
First, students will rinse their mouth with water to take away any leftover from other experiment. Then, students will taste the control tasting paper (tasteless)
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