Lec4.2011.class.slides - Terry OHalloran Arturo De Lozanne...

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Terry O’Halloran Arturo De Lozanne
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What are membranes made of? Karp 4.4 Lipid…………And Proteins………
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What are membranes made of? Lipid: 1 . Phospholipid (most are) A. Phosphoglyceride B. Sphingolipid 2. Glycolipid 3. Cholesterol (a steroid) All are amphipathic
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Abundant Phospholipids Within The Membranes of Animal Cells Phosphoglycerides Sphingolipid Slide 11 10.3
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Phospholipids: Bilayer arrangement in membranes Alberts 2-22 How is a phospholipid amphipathic?
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Lipid Bilayers Naturally Form Spheres Fig 10-8
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Membranes are fluid
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-fatty acid tails: a major contributor to the fluidity of the membrane What do we mean by fluidity? AT HOME: Understand how the Length and Saturation of the Fatty Acid Tail Contributes to Membrane Fluidity Length of fatty acid tail (18 x C) (longer ==> less fluid) Saturated vs. unsaturated (double bonds ==> more fluid) Alberts 10-12
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What are membranes made of? Lipid: 1. Phospholipid (most are) A. Phosphoglyceride B. Sphingolipid 2. Glycolipid 3. Cholesterol (a steroid) All are amphipathic
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What are membranes made of? Lipid:
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Lec4.2011.class.slides - Terry OHalloran Arturo De Lozanne...

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