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Lipids

Lipids. Phospholipid. Lipid Structure. Fats, Oils, Waxes Energy for cells, cell structure, insulation Lipids & Proteins compose the cell membrane Cholesterol: gives cell membrane flexibility Stucture (2 parts): “Head” of glycerol (polar) “Tail” of fatty acid molecules (non-polar)

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Lipids

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  1. Lipids

  2. Phospholipid Lipid Structure • Fats, Oils, Waxes • Energy for cells, cell structure, insulation • Lipids & Proteins compose the cell membrane • Cholesterol: gives cell membrane flexibility • Stucture (2 parts): • “Head” of glycerol (polar) • “Tail” of fatty acid molecules (non-polar) • Monomer: Fatty Acid • Polymer: Lipid 1 2

  3. How do they bond? • Dehydration synthesis between the glycerol and fatty acids

  4. Fats and oils have different types of fatty acids. Saturated Fats • Long chain of C-C bonds (all single bonds) • Each C is “saturated” with H atoms • Single bonds are easier to compact = solid at room temps • Very common in animal fats think

  5. Unsaturated Fats • Long chain of C-C bonds (some double bonds) • Unsaturated: Less space for H atoms • Double bonds make “kinks”, which are not easily compacted = Liquid at room temps • Plant fats think

  6. Which has more H? 18 16

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