Wednesday, December 9, 2015

Cell membrane diffusion lab

Day 1 
Me and Dakara and our project 

A plastic bag representing the cell membrane was filled with corn starch. A jar was half filled with iodine and diluted  with water. The bag with corn starch was tied up and placed in the jar. 

Day 1 ( after 15 minutes ) 
The iodine in the plastic bag ( the cell membrane) turned purple. This is an act of osmosis. The semi- permeable cell, (plastic bag) allowed water to pass through and get indulged by the molecule which is the iodine and diluted water which is an act of diffusion. 

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