Biology, 10.02.2021 21:50 DisneyGirl11
Students filled up five test tubes with milk, which contains lactose sugar. They added methylene blue, which is an oxygen indicator to each
test tube. The students left one test tube without yeast. They put 2ml of yeast, 3ml yeast, 4ml of yeast and Sml of yeast in the next 4 test
tubes. They timed how long it took for the yeast to deplete the oxygen in each test tube.
What is the independent variable in this experiment?
Answers: 1
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Students filled up five test tubes with milk, which contains lactose sugar. They added methylene blu...
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