In this semipermeable membrane worksheet, students answer pre-lab questions observing osmosis and semipermeability through use of macromolecules.
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Diffusion across a Selectively Permeable Membrane
Lab groups fill a section of dialysis tubing with glucose and starch solutions and suspend it in a water bath. They use iodine as a starch indicator and a glucose test strip to find out if either of the materials crossed the selectively...
7th - Higher Ed Science
Diffusion Across a Semipermeable Membrane
Semipermeable membranes allow water to go through—but not larger molecules. The simulation encourages pupils to adjust the membrane pore size to understand how this works. It also provides a way to trace the movement of a single molecule.
9th - 12th Science CCSS: Adaptable
Cell Membranes Are Way More Complicated Than You Think
Cell membranes contain many contradictions; for example, they are both oily and strong. The video explains the parts of a cell membrane, the function of each part, and discusses the contradictions. It highlights what happens when...
5 mins 9th - 12th Science CCSS: Adaptable