© 2010 Andrew Douch. This episode covers biological membranes and the various ways that molecules are able to cross them. It looks at simple diffusion, osmosis, facilitated diffusion, active transport and bulk transport.

This episode covers the basic chemical terminology and concepts that you will need to know in order to make sense of the biology covered in VCE Unit 3 biology.

This is the first episode for 2010. It is an introduction to VCE Unit 3 biology and introduces the theme running through the unit, that biomolecules interact with each other because their three-dimensional shapes fit together.

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© 2009 Andrew Douch Please do not reproduce without permission.

Disclaimers: 1. The explanations provided in this podcast are given in good faith but no responsibility will be taken for their accuracy. 2. The opinions expressed in this podcast are my own. They do not represent the opinions of the VCAA or any other organisation or government body.