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Wednesday, November 12, 2014
7th Graders Study Molecules
Lily Reynolds and Janey Valente extracted deoxyribonucleic acid from strawberries to learn about the macromolecules of life.
Ki'ilani Arruda is investigating the movement of molecules across a semi-permeable membrane to understand how diffusion across a cell membrane works. In this model of diffusion, the iodine molecules moved from an area of high concentration to an area of low concentration and turned the starch inside the "cell" purple!