New York State Chemistry RegentsNew York State Earth Science Regents

 
Living Environment Regents August 2010 Question 73 PDF Print E-mail
Friday, 27 May 2011 18:31
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The artificial cell has a semi-permeable membrane, thus the glucose and the starch molecules could move out of the artificial cell by diffusion. Diffusion is the spontaneous tendency of a substance to move down its concentration gradient from a more concentrated to a less concentrated area. When the starch molecules reach the solution outside the artificial cell, then the starch indicator would react with the starch molecules and will turn the solution into a dark blue color.
 

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