Student's Background Infromation
Diffusion, Osmosis and Cell Membranes
by John R. McCandless, Jr.
Introduction
In this unit, the students will explore some of the properties and
processes of the cell membrane including permeability, passive transport,
equilibrium, diffusion, osmosis, cell tonicity and rates of diffusion.
The students perform a number of laboratory activities intended to lead
them, through exploration and analysis, to a thorough understanding of
the importance of a cell membrane and the physical processes of diffusion
and osmosis.
The unit includes both teacher and student materials. Teacher materials include background information, scheduling suggestions, preparation instructions, evaluation keys, and a resource list. Student materials include a background reading sheet, several exploratory activities with evaluation questions, a culminating experiment, and a quiz.
Organization of the Unit
. This unit book is organized into:
- The Overview with materials and resource lists
- Osmosis in Elodea Cells Unit
- Dynamic Equilibrium Unit
- Factors Affecting Diffusion Unit
- Osmosis Unit
- Osmosis and Blood Cells Unit
Department of Biochemistry and Molecular Biophysics
General Biology Program for Secondary Teachers
warder@email.arizona.edu
http://biology.arizona.edu/sciconn/lessons2/lessons.html
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