Biotechnology 2 performed their dye electrophoresis today, here are the before and after pictures. The dye migrated toward the positive electrode, indicating that the dye itself is negative. The heavier blue dye did not travel as much as the yellow, indicating that it is heavier than the yellow dye.
In this forensic simulation we tested "stomach contents" to determine what our victim ate last. Here are the results for Biology's "Murder and a Meal" lab, from left to right: Lipid test was positive, indicated by the red stained fat molecules floating at the top. Glucose test was positive, the indicator went from royal blue to a pale green color. Starch test was positive, indicator changed from dark brown to blackish-purple. We're setting up for Biology's "Murder and a Meal" Lab. Students will be testing "stomach contents" to determine what our victim's last meal was. We will do this by testing for the presence of various macromolecules. Featured here: Mrs. Blake's set up.
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AuthorMrs. Husselstein's blog on activities going on in class and beyond. Archives
February 2016
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