Biology notes 1 Oct 2008

Biology notes 1 Oct 2008 - October 1, 2008 Membrane Biology...

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October 1, 2008 Membrane Biology membranes are barriers but there are also functions in them that are essential to life, e.g. electron transport membranes are lipids but can be up to 60% protein and these proteins drive many of the important functions amphipathic - both hydrophilic and hydrophobic fatty acids are very diverse – you can have many different types of fatty acids with many different types and numbers of bonds fatty acid composition fundamentally affects membrane structure fluidity is based on the proportion of unsaturated fatty acid temperature can also affect fluidity fluidity is fundamentally linked to maintaining function, e.g. for electron transport it is important that the membranes stay fluid Why saturate oils? increases shelf life, e.g. twinkies o this is b/c the double bond is a source of electrons and when those are oxidized bad thing happen (i.e. bad taste) baking taste and texture Trans fats when cis-unsaturated fats are hydrogenised, they often produce saturated
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This note was uploaded on 04/04/2009 for the course BIOLOGY 1222 taught by Professor Haffie during the Spring '09 term at UWO.

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Biology notes 1 Oct 2008 - October 1, 2008 Membrane Biology...

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