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Cells – Cell Membrane

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Cells

Visking/dialysis tubing experiment

Observe the movement of substances, iodine and starch, across the membrane of a Visking or dialysis tubing. Iodine solution turns from yellowish-brown to dark blue when it comes into contact with starch.
https://videos.files.wordpress.com/Dhx9Ac0v/dialysis-tubing-diffusion-time-lapse_hd.mp4
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