To illustrate the diffusion of molecules across the cell membrane and the role concentration plays in the movement of water. This lab should be performed as an introduction to the cell unit (i.e., they should not already know about osmosis and diffusion). This lab is most applicable for an introductory biology course but could be used at any grade level from 6-12. Students will need to be familiar with the idea of homeostasis. Upon completion of this activity, students will be able to: explain how diffusion happens using the term concentration gradient and state the exact cause of the volume change occurring in the egg. This teaching resource was developed by a K-12 science teacher in the American Physiological Society’s 2007 Frontiers in Physiology Program. For more information on this program, please visit www.frontiersinphys.org.


  • Education > General

Education Levels:


    Diffusion,Water,Chemistry,NSDL,NSDL_SetSpec_BEN,Physics,oai:nsdl.org:2200/20110722031311272T,Geoscience,Cell,General,Education,Student-centered instruction,Life Science,Teacher-centered/traditional instruction,Tutorial or self-directed instruction,Water balance,Laboratory experiment,Osmosis



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