Week+4+Cell+Membrane+Structure+&+Function

=**Weekly Content**= This week we will be taking a more detailed look at the role of the membranes in cells and start to investigate transport processes across membranes.

=Practical= There is no practical this week. Instead we will be starting work on your written assignment. **You will still need to turn up to class at the beginning of your double lesson.**

=Reading and Other Media= This video provides a good animation of the of the basic structure of cell membranes and it roll in maintaining the internal cellular environment. media type="youtube" key="ULR79TiUj80" height="315" width="420" align="center"



=Homework= 1. Work on your assignment, it is due next week! Come to us with any questions. 2. Complete your summary of Diffusion and Osmosis and answer the following questions frm the text.
 * **Text Questions:** ||
 * **a.** Use the following terms and phrases to write a definition of diffusion: area of low concentration, process, passive, area of high concentration, concentration gradient, particles.
 * b.** 'Diffusion is a passive process.' Explain.
 * c.** List the factors that affect the rate of diffusion of different types of substances across membranes. ||

=Student Content= Got something you would like to add? A video, webpage, or comment you would like to make. Go for it!